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IMPORTANT, MULTIPLE CHOICE QUESTIONS, (Lines and Angles), 6.1. INTRODUCTION, (a) an obtuse angle, 1. The minimum number of points required to, (b) an acute angle, draw a line is, (a) 1, (c) a straight angle, (d) a right angle, (b) 2, (c) 3, (d) 4, 2. In how many points, two intersecting lines, intersect?, 5. An angle which is greater than 90° and less, than 180° is called, (a) a right angle, (b) a straight angle, (a) 4, (b) 3, (c) 2, (d) 1, (c) an acute angle, (d) an, tuse angle, 6. An obtuse angle, 3. How many types of angles are formed between, the edges of plane surfaces?, (a) Of different types, (a) measures between 0° and 90°, (b) is greater than 90° but less than 180°, (c) is exactly equal to 90°, (d) is exactly equal to 180°, 7. A straight angle, (b) Of only one type, (c) Of only two types, (d) Of only three types, 6.2. BASIC TERMS AND DEFINITIONS, 1. An acute angle, La) is greater than 90° but less than 180°, (a) measures between 0° and 90°, (b) is exactly equal to 90°, (b) is exactly equal to 90°, (c) measures between 0° and 90°, (c) is greater than 90° but less than 180°, (d) is exactly equal to 180°, 8. An angle which is exactly equal to 180° is., (d) is equal to 180°, 2. An angle which measures betwcen 0° and 90°, is called, called, (b) an acute angle, (d) an obtuse angle, (a) a right angle, (c) an acute angle, (b) a straight angle, (d) an obtuse angle, (a) a straight angle, (c)a right angle, 9. A reflex angle, 3. A right angle, (a) is greater tban 180° but less than 360°, (a) measures between 0° and 90°, (b) is exactly equal to 180°, (c) is exactly equal to 90°, (d) is greater than 90° but less than 180°, (b)is exactly equal to 90°, (c) is greater than 90° but less than 180°, (d) is equal to 180°, 10. Two angles whose sum is 90° are called, (a) supplementary angles, 1)complementary angles, Scarned By KagazScanner, 4. An angle which is exactly equal to 90° is, called

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GOLDEN MATHEMATICS-IX, AN50, 23. Which of the following is not a, coinplementary angles?, (a) 60°, 30°, (c) 0°, 90°, 24. Which of the following is not a pair s, supplementary angles?, pair of, (c) corresponding angles, (d) altemate angles, (b) 56°, 34°, (d) 150°, 30°, 11. The sum of two complemcntary angles is, (a) 180°, (b) 360°, (d) Nonc of thcse, 12. The angles whosc sum is 180° arc called, (c) 90°, (b) 32°, 58°, (d) 76, 104°, (a) supplementary angles, (b) complementary angles, (c) altemate angles, (a) 90°, 90°, (c) 0°, 180°, 25. In the following figure, thc reflex angle AOR, is equal to, (d) corresponding angles, 13. The sum of two supplementary angles 1is, PA, (a) 90°, (b) 180°, (c) 360°, (d) None of these, 14. The angle complementary to 45° is, (a) 30°, (b) 45°, (c) 135°, 15. The complement of an angle m is:, 60°, (d) 0°, (а) т, (b) 90° + m, (c) 90° - m, (d) in x 90°, (a) 60°, (b) 120°, (c) 300°, 26. The angle which is equal to 8 times įts, complement is:, [CBSE 2010], (d) 360°, 16. The angle supplementary to 60° is, (a) 30°, (b) 120°, (c) 45°, 17. Find the measure of the angle which is, complement of itself., (a) 30°, (c) 45°, 18. Find the measure of the angle which is supple-, (a) 80°, (c) 90°, 27. If the measure of an angle is twice the mea-, (d) 300°, (b) 72°, (d) 88°, [CBSE 2010], (b) 90°, (d) 180°, sure of its supplementary angle, then the mea-, sure of the angle is:, (CBSE 2010], (а) 60°, ment of itself., (b) 90°, (c) 120°, 28. The angle which exceeds its complementary, (a) 30°, (d) 130°, (CBSE 2010), (c) 45°, (d) 180°, (CBSE 2011], angle by 30° is :, 19. The complement of (90° – a°) is:, (a) 50°, (a) -a°, (c) 90° - a, (b) 90° + a°, (b) 120°, (d) a°, (c) 60°, (d) 80°, 29. Two complementary angles are in the ratio, (CBSE 2012), (CBSE 2010, 201l}, 20. The angle supplementary to 90° - 9° is, 4:5, then angles are:, (a) 90° + 9°, (b) 9°, (a) 90°, 90°, (c) 30°, 150°, (c) 180° -9°, (b) 40°, 50°, (d) 45°, 45°, (d) 360° - 9°, 21. The angle supplementary to 90° + 9° is, {CBSE 2010], (b) 90° - 9°, (d) 180° + 9°, 30. Two angles measure (30-a)° and (125+ 2a)., If each one is the supplement of the othel,, then the value of a is:, (a) 90° + 9°, (c) 180° - 9°, · 22. The angle supplementary to 180° - 9° is, (a) 45°, (a) 9°, (c) 180° + 9°, (b) 180°, (b) 35°, (d) 90° + 9°, (c) 25°, 265°, Scanned By KagazScańfer, (CBSE 2011]

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ZXYP + 2ZYQ = 85°, then Z PYQ is :, 31. In the given figure, XYZ is a straight linc. If, LINESAND ANGLES, A151, (c) adjacent angles, (d) Nonc of thesc, 2. Which of the following pairs is not a pair of, adjacent angles?, (a), Y, B, (a) 95°, (b) 85°, (c) 90°, (d) 75°, [CBSE 2012), A, 6.3. INTERSECTING LINES AND, NON-INTERSECTING LINES, (b), 1. We can draw two different lines in, B, (a) only one way, (b) two different ways, A, (c) three different ways, (c), (d) None of these, B, 2. A line indicates, (a) only one direction, (b) two directions, A, (c) no direction, (d), (d) None of these, 3. The length of the common perpendiculars at, different points on parallel lines is the same, and is called, B, (a) the distance between the parallel lines, A, (b) the altitude, (c) the median, (d) None of these, 3. A pair of angles is called linear pair if the, sum of two adjacent angles is:, (a) 90°, (b) 180°, 6.4. PAIRS OF ANGLES, (c) 230°, (d) 360°, 1. In the following figure, AOB and BOC, [CBSE 2010], аге:, 4. The value of x in figure is:, (a) 80°, (b) 20°, (d) 40°, (c) 25°, A, (a) supplementary angles, (b) complementary angles, 5x4x, B, (CBSE 2010}, Scanned By KagazScanner

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A152), GOLDEN MATHEMATICS-IX, 9. In figure, value of x is:, (a) 20°, 5. In figure, the valuc of y is:, (b) 40°, (12) 28°, (b) 32°, () 50°, (c) 36°, (c) 30°, (d) 44°, 4x, 3y, 40%, 2y, A, 150°, [CBSE 2010, 6. In figure, the value of x is:, (CBSE 2010}, (а) 30°, 10. In the following figure, two straight lines AB, and CD intersect each other at O and angles, formed at O are marked. Here Zx-Zy has, (b) 10°, (c) 20°, (d) 40°, the value, B, 40°, 5x°, 62°, 2x, [CBSE 20101, 7. In the given figure if AOB is a straight line,, then Z BOC is:, (a) 56°, (b) 118°, (c) 62°, 11. In figure, the value of angle q is:, (d) 180°, (a) 60°, (b) 90°, (2x + 30°), (2x + 10°), (c) 50°, (d) 40°, (a) 80°, (b) 70°, (c) 60°, 8. In the given figure, the value of x which makes, POQ a straight line is:, (d) 20°, (CBSE2012), 50°L x, 90°, (a) 35, (b) 30, (c) 25, (d) 40, R, (CBSE201L);, 12. In figure, lines AB and CD intersect at O. If, Z AOD, Z DOB, 4, then 2 COB is:, 5', (a) 80°, (b) 100°, (c) 90°, [CBSE 20101), (d) 70°, Scanned By KagazScanner, x+30

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LINESANDANGLES, A153, (a) Corresponding angles arc equal, (b) Altemate intcrior angles arc cqual, (c) Interior angles of the same side of the transversal, arc supplementary, (d) Interior angles on the same side of the transversal, are complementary., B, 4. If two parallel lines are intersected by a trans-, versal, then corresponding angles are:, (CBSE 20101, (a) Equal, 6.5. PARALLEL LINES AND A, TRANSVERSAL, (b) Complementary, (c) Supplementary, 1. From the given figure, identify the incorrect, statement, given that I Il m and t is the trans-, (d) Sum of the two angles is 360°, versal:, (CBSE 20101, 5. In figure, AB || CD and t is a transversal, the, value of x is equal to:, m', (a) 50°, (b) 70°, (c) 35°, (d) 20°, B, (2x + 40), (a)L2 and Z5 are supplementary, (b)22 and 28 are supplementary, (c) Z2 and Z3 are supplementary, (d) 22 and 21 are supplementary, (x + 90), [CBSE 2021R, [CBSE2010, 2. In the following figure, a transversal c inter-, sects two parallel lines a and b at points A, and B. The angles formed at A and B have, been marked. Tell which pair of angles need, not be equal?, 6. Given lines l, , and l, in figure are parallel., The value of x is:, (a) 40°, (b) 140°, (c) 50°, (d) 80°, 40°, 8, (CBSE20101, 7.- If two interior angles on the same side of a, transversal intersecting two parallel lines are, in the ratio 2:3, then the smaller of two angles, (a) 41, 22, (c) Z1, 25, 3. If two parallel lines are cut by a transversal,, then which of the following is not true?, (6) 21, 23, (d) 2 2, 48, is:, (a) 72°, (b) 108°, (c) 54°, (d) 36°, (CBSE 2010);, Scanned By KagazScanner