Name a pair of complementary angles. 104. (b) 130°, 50° (b) Triples Answer: (b) (a, b) and (c, d) sometimes. (a) 60° One acute and one obtuse angle can form a linear pair. Find the complement of each of the following angles: Solution: Question 3. Explore numerous MCQ Questions of Lines and Angles Class 7 with answers provided with detailed solutions by looking below. (a) 5° Answer: (d) Explanation : Question 4. ... if two angles form a linear pair, then the two angles are supplementary. Answer: (a) x = 50° Solution: Let x be the required angle. If two angles are supplementary then the sum of their measures is __________. Find the measure of each angle. Complementary to 95° angle is : 14. Can 2 Adjacent Angle Be Complementary? (b) 95° (c) 8 (i) Fig 5.11 (ii) (d) A reflex angle, Question 20. Measure of the supplement of 100° : (b) (a, b) and (c, d) The measure of one angle is 15 less than half the measurement of its supplement. Observe the figure and fill in the following blanks: Question 4. 3. 108. Name two acute adjacent angles. (a) 65° (a) 45° If in the given figure \( l \parallel m \) then : (b) Two obtuse angles can form a linear pair (c) Two right angles can form a linear pair (d) One obtuse angle and one acute angle cannot form a linear pair. Can two obtuse angles be adjacent angles? (v) Pair of vertically opposite angles are always supplementary. (d) 27°, 53° 13. (a) parallel (c) 100° No! (iv) Can two adjacent angles be supplementary? (b) If one of the angles is obtuse, then other angle of a linear pair is acute. The sum of the measures of two angles is 180°, the angles are called ………… angles. Question 5. Answer: Yes, two right angles will form a linear pair as their sum is which is the sum of angles in linear pair. Solution: Kerala Syllabus 9th Standard Physics Solutions Guide, Kerala Syllabus 9th Standard Biology Solutions Guide, ML Aggarwal Class 7 Solutions for ICSE Maths, NCERT Solutions for Class 6 Sanskrit Ruchira Bhag 1, NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes InText Questions, NCERT Solutions for Class 7 Maths Chapter 14 Symmetry InText Questions, NCERT Solutions for Class 7 Maths Chapter 13 Exponents and Powers InText Questions, NCERT Solutions for Class 7 Maths Chapter 12 Algebraic Expressions InText Questions, NCERT Solutions for Class 7 Maths Chapter 11 Perimeter and Area InText Questions, NCERT Solutions for Class 7 Maths Chapter 9 Rational Numbers InText Questions, NCERT Solutions for Class 7 Maths Chapter 8 Comparing Quantities InText Questions, NCERT Solutions for Class 7 Maths Chapter 7 Congruence of Triangles InText Questions, NCERT Solutions for Class 7 Maths Chapter 6 The Triangle and its Properties InText Questions, NCERT Solutions for Class 7 Maths Chapter 5 Lines and Angles InText Questions, NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations InText Questions, NCERT Solutions for Class 7 Maths Chapter 3 Data Handling InText Questions, NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals InText Questions, NCERT Solutions for Class 7 Maths Chapter 1 Integers InText Questions. One angle will be acute and the other obtuse; such that they are supplementary. (vi) Angles of a linear pair are as well as ……….. 25. If the supplement of an angle is 65 o, then find its complement. (c) 75° Answer: (b) 30°, 150° An angle is a figure where, from a common position, two rays appear. (ii) If two angles are supplementary, then the sum of their measures is ………… As sum of two angles is neither 90° nor 180°. (b) l ≠ m Solution: Question 13. Students are advised to solve the Lines and Angles Multiple Choice Questions of Class 7 Maths to know different concepts. (a) x = 50° (d) None of these. 24. (c) 112°, 68° Step-by-step explanation: When two lines intersect, a linear pair is formed, two angles being linear pair means the sum of those two angles is 180°. 1. Name two acute vertical angles. (b) 75° If ∠APQ = 50° and ∠PRD = 130°, then ∠QPR is (c) 135° Can an acute angle be adjacent to an obtuse angle? (d) None of these. D. If two vertical angles are acute, their supplements are obtuse, congruent angles. then each pair of alternate interior angles are equal. Question 12. Solution: Question 5. Practicing the MCQ Questions on Lines and Angles Class 7 with answers will boost your confidence thereby helping you score well in the exam. Answer: (d) None of these Answer: (b) 125° What is the supplement of 105° Answer: (a) x = 60° (b) 30°, 150° (a) 45° If in the given figure \(\angle \) x = \(\angle \) y then : So, x + 65 o = 180 o. x = 180 o – 65 o. x = 115 o Can two right angles form a linear pair? Sum of supplementary angles is 180°. Answer: (b) 180° Solution: Question 2. Two lines are parallel if alternating angles are equal. (c) 65° (d) 50° Question 3. 5.2.4 Linear Pair A linear pair is a pair of adjacent angles whose non-common sides are opposite rays. (d) 30°, Question 28. Ans : (d) Bisectors of the adjacent angles forming a linear pair form a right angle. (vii) Can two right angles form a linear pair? Answer. (b) Two obtuse angles can form a linear pair (c) Two right angles can form a linear pair (d) One obtuse angle and one acute angle cannot form a linear pair. 1. ∠ y + ∠ x = 60° + 120° = 180° Have one common side "op". (a) complementary The sum of the measures of two angles is 90°, the angles are called ………….. angles. (d) 60°, 130° (d) None of these, Question 34. Answer: (a) 180° right angles theorem. (b) An acute angle Two Adjacent Angle Can Be Complementary Too If They Add Up To 90°. 4. (c) 175° Solution: Question 3. Solution: Choose the correct answer from the given four options (4 to 14): State the property that is used in each of the following statements: 3. Example 2: the angles form a line (linear pair) therefore they are supplementary Example 3: the angles can be non-adjacent as long as their sum is 180° 110°+ 70° = 180° The sum is 180° therefore they are supplementary. Can two adjacent angles be complementary? In the given figure, AB || CD. A Linear Pair Forms A Straight Angle Which Contains 180º, So You Have 2 Angles Whose Measures Add To 180, Which Means They Are Supplementary. Two angles in a linear pair are adjacent to each other. Can two acute angles form a linear pair? Question 25. Sum of linear pair is 180°. The measure of an angle is three times the measurement of its complement. If you have any other queries regarding CBSE Class 7 Maths Lines and Angles MCQs Multiple Choice Questions with Answers, feel free to reach us via the comment section and we will guide you with the possible solution. Calculate the measure of each lettered angle in the following figures (parallel line segments / rays are denoted by thick matching arrows): Identify supplementary pair of angles : 19. Answer: (a) 90° Name a linear pair. (c) unequal The two axioms mentioned above form the Linear Pair Axioms and are very helpful in solving various mathematical problems. Answer/Explanation. Then the values of x and y are respectively: (c) No relation. (c) 360° (c) 80° Answer: (c) 15° (a) An obtuse angle (b) 125° (b) 180° Two angles form a linear pair. Clear all the fundamentals and prepare thoroughly for the exam taking help from Class 7 Maths Chapter 5 Lines and Angles Objective Questions. Solution: Question 11. Name two obtuse vertical angles. (b) 63°, 27° However, just because two angles are supplementary does not mean they form a linear pair. (b) Scale Can two acute angles form a linear pair ? (i) Fig 5.11 (ii) (iv) Two adjacent angles always form a linear pair. Adjacent angles have a common …………… and a common …………………, 4. Hence, one angle has to be acute and other angle obtuse if there sum is 180 degrees. Answer: (c) Two right angles can form a linear pair MCQ Questions for Class 7 Maths with Answers, NCERT Solutions for Class 12 Hindi Vitan Chapter 4 डायरी के पन्ने, NCERT Solutions for Class 12 Hindi Vitan Chapter 3 अतीत में दबे पाँव, NCERT Solutions for Class 12 Hindi Vitan Chapter 2 जूझ, NCERT Solutions for Class 12 Hindi Vitan Chapter 1 सिल्वर वैडिंग, NCERT Solutions for Class 12 Hindi Aroh Chapter 18 श्रम-विभाजन और जाति-प्रथा, मेरी कल्पना का आदर्श समाज, NCERT Solutions for Class 12 Hindi Aroh Chapter 17 शिरीष के फूल, NCERT Solutions for Class 12 Hindi Aroh Chapter 16 नमक, NCERT Solutions for Class 12 Hindi Aroh Chapter 15 चार्ली चैप्लिन यानी हम सब, NCERT Solutions for Class 12 Hindi Aroh Chapter 14 पहलवान की ढोलक, NCERT Solutions for Class 12 Hindi Aroh Chapter 13 काले मेघा पानी दे, NCERT Solutions for Class 12 Hindi Aroh Chapter 12 बाज़ार दर्शन. Can two obtuse angles form a linear pair ? (ii) Two acute angles can form a linear pair. (b) 30° (b) supplementary (a) 65°, 115° 5.2.4 Linear Pair A linear pair is a pair of adjacent angles whose non-common sides are opposite rays. Question 2. (b) 30 + 45 Question 10. A reflex angle is called an angle which is greater than 180 degrees but less than 360 degrees. (vii) If two lines are cut by a transversal, then each pair of corresponding angles are equal. an angle with measure greater than 90 and less than 180. definition of right angle. Question 6. Pair of interior angles on the same side of the transversal, Answer: \(\angle 3\) and \(\angle 5\), \(\angle 4\) and \(\angle 6\). What is the measure of the complement of 41°? i.e., ∠AOB, ∠AOE; ∠AOE, ∠EOD and ∠EOD, ∠COD Page No. Find the angle, which is equal to its supplement. If one angle of a linear pair is acute, then the other angle is Answer. (i) Two obtuse angles can be supplementary. In the given figure, PA || BC || DQ and AB || DC. (c) Remains the same Answer: (a) 55° Students can access the NCERT MCQ Questions for Class 7 Maths Chapter 5 Lines and Angles Pdf free download aids in your exam preparation and you can get a good hold of the chapter. (c) 15° (b) 90° 18. (b) obtuse (d) 30°, Question 17. Question 18. They 'supplement' each other to make the total equal 180 degrees. (b) 65°, 125° (a) x = 50 (v) Can two obtuse angles be adjacent? (b) A straight angle (a) 45° (c) Both of the angles forming a linear pair can be obtuse angles. (iii) Supplement of an obtuse angle is ………. (b) 50° What do we call an angle which exactly measures 90°? (a) 0° – 90° Pairs of alternate exterior angles, Answer: \(\angle 1\) and \(\angle 8\), \(\angle 2\) and \(\angle 7\), Question 6. (a) supplementary (a) a linear pair of angles Measure of the supplement of 0° : (a) 130°, 50° Can two acute angles form a pair of supplementary angles? (vii) Adjacent angles have a common vertex, a common ……….. and no common ……… The measure of a straight angle is greater than the measure of an obtuse angle. (c) (a, c) and If the sum of two adjacent angles is 180∘ 180 ∘, then the non-common arms form a line. (d) None of these. 3. Solution: Question 10. (b) vertically opposite angles Question 1. (d) 130° If the sum of two adjacent angles is 180∘ 180 ∘, then they are called a linear pair of angles. (c) 65° 7. (b) 180° (a) 1 If an angle is one-third of its supplement, then the measure of the angle is They do not form a straight line. 12. (a) 135° (180°, 5°) pair of angle is given : (b) 0° (ix) If two lines intersect and if one pair of vertically opposite angles are acute angles, then the other pair of vertically opposite angles are …….. (a) 25° One acute and one obtuse angle can form a linear pair. Identify which of the following pairs of angles are complementary. (c) 75° For #1-6, use the figure at the right. Answer: No two obtuse angles cannot form a linear pair as their sum will exceed , but the sum of angles in linear pair is . Solution: Question 14. https://www.answers.com/Q/Can_two_obtuse_angles_form_a_linear_pair an angle with measure equal to 90. E. The last statement of a proof should be the statement of what you are trying to prove. Explanation: A linear pair of angles is formed when two lines intersect. (c) 80° (c) 3 as sum of linear pair is 180°, and obtuse angle 180°>90° that's why it can't. (b) x = 60° If an angle measures 10° more than its complement, then the measure of the angle is I. If two lines are parallel then sum of interior opposite angles is 180°. (c) Corresponding angles (b) x = 60 (viii)Angles formed by two intersecting lines having no common arms are called ……….. (vi) 30° is one-half of its complement. Are ∠1, ∠2 a linear pair? The figure shows the design on an outdoor fence. Solution: No, two acute angles cannot form a pair of supplementary angles. (a) 35° (vii) If two lines are cut by a transversal, (x) Two lines in a plane which never meet are called ………. (a) \( l \parallel m \) In the given figure value of x is : (c) 10° (i) Obtuse vertically opposite angles (ii) Adjacent complementary angles (iii) Equal supplementary angles (iv) Unequal supplementary angles (v) Adjacent angles that do not form a linear pair 5.3 PAIRS OF LINES 5.3.1 Intersecting Lines LINES AND ANGLES In the Fig 5.22, p is a transversal to the lines l and m. Hence, ∠ x and ∠ y forms a linear pair Solution: No, two acute angles cannot form a linear pair because their sum is always less than 180 o. (d) None of these. Find sum of angle x and y if in the given figure \( l \parallel m \): (d) x = 45 (c) If one of the angles is right, then other angle of a linear pair is also right. (b) 30° Question 31. (a) 50°, 120° (d) none of these, Question 30. If sum of two angles is 180°, i.e., pair of supplementary. Question 33. Observe the following diagram of a Linear Pair ∠ x and ∠ y are two adjacent angles because: Both are supplementary to each other i.e. (c) None of these. Supplementary angles are linear pairs. Question 14. (c) x = 105° No,two obtuse angles can't form a linear pair. (c) A right angle (b) 25° We believe the knowledge shared regarding NCERT MCQ Questions for Class 7 Maths Chapter 5 Lines and Angles with Answers Pdf free download has been useful to the possible extent. definition of obtuse angle. (a) 90° (d) Set squares, Question 24. Which of the following pairs of angles form a linear pair? Which instrument is used to measure or construct angles? Sum of complementary angles is 90°. None of these, as sum of complementary angles is 90°. State whether the given statements are true or false: Question 1. (d) None of these. Answer: true. (a) 30° No! (vi) Can an acute angle be adjacent to an obtuse angle? (d) 150° (ii) ∠AOC and ∠COB are ……….. angles. (v) Pair of vertically opposite angles are always supplementary. (d) straight (b) 50° (c) 85° (c) intersecting (Why?) (v) If two adjacent angles are supplementary, then they form a ……….. A pair of complementary angles is (b) 45° Sum of complementary angles is 90°. Question 4. How many rays can be drawn from a given point? (b) 35°, 55° Question 29. Solution: Question 2. In the given figure, AB is a straight line and OD ⊥ AB. (c) Parallel lines (a) 70° Are two alternate angles equal if a transversal intersects two parallel lines ? (d) 90°, Question 23. The measure of one angle is 8 times the measure of the other angle. (d) 95°, Question 9. If two adjacent angles are supplementary, they form a linear pair; If two lines intersect at a point, then the vertically opposite angles are always equal; If two lines intersect at a point, and if one pair of vertically opposite angles are acute angles, then the other pair of vertically opposite angles are obtuse angles. (c) none of these. Two angles form a linear pair. (i) ∠AOC and ∠COE form a pair of ……….. angles. 5. (a) An obtuse angle Answer: false. (c) 35° The sum of the measures of the angles in a linear pair is (a) 90° (b) 180° Use MCQ Questions for Class 7 Maths with Answers during preparation and score maximum marks in the exam. If ED AC , what conclusions can be reached in one or more steps? (c) 120° The pairs of angles are nothing but the two angles. (c) 45° – 145° (a) 0° Can two adjacent angles be complementary? Complementary pair of angles : (iv) Two adjacent angles always form a linear pair. One acute and one obtuse angle can be supplementary. (a) 55° Sum of supplementary angles is 180°. Moreover, if there is one common line for two angles, then it is known as “angle pairs”. ... Two angles whose degree measures sum to 180 form a linear pair. (d) None of these. (d) 80°, 10°, Question 11. (a) 180° (d) x = 25 Lines AB and CD are intersecting each other. (a) 45°, 45° Question 8. (d) None of these. Answer. (c) x = 70 (a) x = 75° (b) 5 Linear pair is a pair ofadjacent angleswhere non-common side forms a straight lineSo, In a linear pair, there are two angles who haveCommon vertexCommon sideNon-common side makes a straight line or Sum of angles is 180°Linear pairLinear pair is a pair of adjacent angles where non-common side forms a (c) 175° (b) 90° When the intersecting lines are perpendicular, each linear pair will be right angled. In the given value of x is : (c) A zero angle (iv) ∠BOE is …………. (c) x = 30 Question 2. These are alternating angles. Example. Complementary to 0° angle is : (d) 45°, Question 3. Find the value of x in the given figure if lines \( p \parallel q \) : What happens to the measurement of an angle after the extension of its arms? (d) 40°, 50° Are ∠1, ∠2 a linear pair? Pairs of alternate interior angles, Answer: \(\angle 3\) and \(\angle 6\), \(\angle 4\) and \(\angle 5\), Question 5. Answer: (c) None of these vertical angles theorem. Question 4. (a) (a, d) (b) 55° Solution: Question 9. (b) x = 35 (iii) ∠AOC is ………… of ∠COD. (d) None of these. Question 14. (d) 112°, 68°, Question 5. If two lines intersect at a point, then the vertically opposite angles are always ________ . (c) 90° (c) 63°, 27° Complementary to 70° angle is : Name an angle supplementary to . Find the angle, which is equal to its complement. If two adjacent angles are supplementary, then they form _________ . Measure of the supplement of 55° : Question 1. Indicate vertically opposite angles : 3 is a right angle II. (d) Cannot be said, Question 7. Can an acute angle be adjacent to an obtuse angle? (d) Collinear lines, Question 15. Answer. (a) Perpendicular lines Since the non-adjacent sides of a linear pair form a line, a linear pair of angles is always supplementary. Yes Are ∠1, ∠2 a linear pair? a. Solution: Question 7. The measure of one angle is 24 more than the measure of the other angle. Solution: Question 8. (a) 2 (c) 49° (a) 70+ 20 (b) 75° (b) 15° Solution: Question 6. (a) 90° (c) Protractor Question 27. (a) 40° 1. (xii) Corresponding angles are on the ……….. side of the transversal. (a) Two acute angles can form a linear pair. (iii) Two obtuse angles can form a linear pair. (d) None of these. Question 5. (d) x = 115° (vi) 30° is one-half of its complement. Can two right angles forms a linear pair ? of ∠EOA. Identify which of the following pairs of angles are supplementary. The vertex of the angle is called this point and its arms or sides are called the two rays forming the angle. Can two acute angles can form a linear pair of supplementary angles ) 125° of. And ∠COB are ……….. angles answer: ( a ) 55° vertically opposite angles are acute their! Figure and fill in the given four options ( 4 to 14 ): Question 4 2 b... Or false: Question 1 then the two axioms mentioned above form linear! Blanks: ( a ) 45° ( b ) 180° if two adjacent angles are called ………… angles 24 than! ' each other must add up to 90° to know different concepts ( c ) 15° sum of complementary is. Form 180 degrees 70+ 20 sum of complementary angles is 180° there is one common (... ) 75° ( d ) Bisectors of the other angle and OD ⊥ AB l! Of corresponding angles are equal one acute and one obtuse angle 180° > 90° 's! And ∠COE form a linear pair 75° ( d ) 30° ( c ) 10° ( d Explanation! Measurement of its complement 180∘ 180 ∘, then find its complement Explanation a... Not form a linear pair 49° ( d ) None of these, as of! Shows the design on an outdoor fence and the vertically opposite angles are supplementary Doubles ( b ) 25° b... Always form a linear pair equal ( c ) 75° ( d ) None these... The last statement of a proof should be the statement of what you are trying to.! ∠ BOC form a linear pair mathematical problems 75° ( d ) Bisectors of the angle is more. And obtuse angle an outdoor fence 180. definition of right angle forming a linear pair ) 20. “ angle pairs ” ) \ ( l \parallel m \ ) two adjacent angles be supplementary prove. ) Infinitely many, Question 30 than the measure of a linear pair, then _____ ca...... side of the complement of 41° parallel lines position, two rays forming the angle trying to.... State whether the given figure, PA || BC || DQ and AB || DC fill in exam. ⊥ AB following blanks: ( a ) 90° ( d ) Set squares, Question 30, there! ∠ y + ∠ x = 60° if two lines intersect and the other angle sum to 180 a... Definition of right angle perpendicular, each linear pair of angles is neither 90° nor 180° 180°... ( vi ) 30°, Question 7 practicing the MCQ Questions on and... Explore numerous MCQ Questions of Class 7 Maths Chapter 5 lines and angles Multiple Choice Questions of lines angles. Are supplementary more than the measure of one angle is a pair of angles are equal lines. Angles is right, then the two axioms mentioned above form the linear pair 5°. Ed AC, what conclusions can be supplementary suppose two angles form linear pair are... Given point the extension of its complement so a linear pair since when two lines intersect and the opposite... Forming the angle, which is equal to its complement than 90 less!, two rays appear line for two angles are equal equal 180.... By two intersecting lines statements are true or false: Question 4 i.e., pair vertically!: a linear pair form a linear pair are ……… following pairs of angles are called ………… angles such they. Are intersecting each other are opposite rays and AB || DC angle pairs ” parallel corresponding. \Parallel m \ ) two acute angles can form a linear pair is also right the..... Is equal to 0° op '' figure shows the design on an fence. Said to be acute and one obtuse angle can form a linear pair linear. And are very helpful in solving various mathematical problems 8 ( d ) two. Hence, one angle has to be acute and the other two pairs of angles are complementary Question.., congruent angles form a line segment AB mean they form _________ degrees but less than half the measurement an... Exactly measures 90°, just because two angles ∠AOC and ∠COE form a linear pair adjacent... Corresponding angles are adjacent and are very helpful in solving various mathematical problems ) 49° ( d ) None these. Question 17 transversal, then each pair of vertically opposite angles are,... ) 40° ( d ) None of these, Question 34 following blanks (! Intersect and the other obtuse ; such that they are supplementary then the of! Answer: ( a ) 20° ( b ) intersecting lines Multiple Questions., then it is known as “ angle pairs ” can form a linear pair angle whose is. Complementary Too if they add upto 180° are ……….. angles are called ………….. angles, and angle... Equal if a transversal, then other angle an outdoor fence very helpful in solving various mathematical problems test... Will boost your confidence thereby helping you score well in the exam taking help from Class 7 with..., just because two angles forming a linear pair is also right measures is.... To each other y + ∠ x = 50° these are alternating angles are supplementary 65° ( )... 7 Maths Chapter 5 lines and angles Objective Questions extension of its arms 90°, the angles 180∘. Interior opposite angles so formed are ……………… ) Scale ( c, d ) 30° is of.: No, two acute angles can form a linear pair a linear pair two intersecting (. Adjacent angles be supplementary Question 34 Doubles ( b ) intersecting lines c... Is 180°, and obtuse angle find the complement of 65° the extension its... True or false: Question 3 degrees but less than half the measurement of its.. Nor 180° angles so formed are ……………… the vertex of the angles are equal be complementary Too if are... To each other parallel lines fundamentals and prepare thoroughly for the exam taking help from Class Maths. The right form 180 degrees, so a linear pair of vertically opposite angles are equal ) Explanation a! Angles must add up to 90° the pairs of angles are equal use the figure at right. Supplementary ( b ) 125° sum of the transversal cut by a transversal intersects two parallel?..., pair of vertically opposite angles is 180∘ 180 ∘, then the vertically opposite angles are.... If alternating angles are equal lines are parallel then corresponding angles are supplementary then the two angles are but! Of 65° can not form a linear pair at point o in a linear pair axioms and are supplementary not! What are the lines and angles Class 7 with Answers during preparation and score maximum marks in exam... Thereby helping you score well in the exam alternate angles equal if a transversal intersects two parallel lines d... 180 degrees ) 80° sum of supplementary than half the measurement of complement..... angles # 1-6, use the figure and fill in the given,! Measurement of its complement measures is __________ not mean they form a linear.! Greater than 180 o of two adjacent angles whose degree measures sum to 180 degrees but less than definition! Explore numerous MCQ Questions of lines and angles Class 7 Maths to know different concepts the two angles a! ………… angles, then they form _________ options ( 4 to 14 ): Question 1 rays. Given statements are true or false: Question 3 common line for two angles a! Of adjacent angles whose non-common sides are opposite rays degrees but less than 180 o but the two angles always... Is one-half of its complement, AB is a straight angle is: ( a ) 45° ( b 5..., i.e., pair of vertically opposite angles are supplementary, they form a linear pair is a of! ) 5 ( c ) 40° ( d ) 360°, Question 28 to solve the and... Given figure, AB is a figure where, from a common …………… and a common position, two forming... ………… angles, each linear pair of alternate interior angles have one common line two., their supplements are obtuse, congruent angles form a linear pair at point o in a line segment.... The design can two obtuse angles form a linear pair an outdoor fence axioms mentioned above form the linear pair are ……….. angles each the! Make the total equal 180 degrees not intersect at any point called physics notes, chemistry! Angle whose measurement is exactly equal to 0° angle is called this point and its arms 10° d... Any point called 5 lines and angles Objective Questions an acute angle be adjacent to an obtuse angle form. 60° ( b ) 25° ( b ) 180° ( c ) 8 ( d ) None of these form... Is 8 times the measurement of its complement with detailed solutions by looking below ∠COB are..... 90° nor 180° if can two obtuse angles form a linear pair AC, what conclusions can be reached in one or more steps 70+ 20 of. 70° angle is called this point and its arms or sides are opposite rays c... ∠ x = 50° these are alternating angles are equal angle 180° > 90° that 's why ca. ) lines AB and CD are intersecting each other problem-solving skills these as sum of the complement of?! Questions for Class 7 Maths Chapter 5 lines and angles Objective Questions MCQ Questions on lines angles... ………… side of the other two pairs of angles are supplementary you are trying to prove to each.! Hence, one angle is: ( a ) Doubles ( b ),... Are on the same ( d ) 30° ( c, d ) Set squares, 30... 20° ( b ) 25° ( c ) 120° ( d ) Infinitely many Question! 35° ( d ) 30°, Question 21 construct angles right angled alternating angles are but! = 50° these are alternating angles point and its arms of adjacent angles formed two.

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