Below you will find MCQ Questions of Chapter 6 Lines and Angles Class 9 Maths Free PDF Download that will help you in gaining good marks in the examinations and also cracking competitive exams. These Class 9 MCQ Questions with answers will widen your skills and understand concepts in a better manner.
MCQ Questions for Class 9 Maths Chapter 6 Lines and Angles with answers
1. The supplementary angles are in the ratio 4:5 find the angles.
(a) 145º, 35º
(b) 45°, 135º
(c) 80º, 100°
(d) 90°, 90°
► (c) 80º, 100°
2. An angle is 14° more than its complementary angle, then angle is :
(a) 38°
(b) 52°
(c) 50°
(d) None of these
► (b) 52°
3. The measure of an angle which is a supplement of itself is :
(a) 45°
(b) 30°
(c) 90°
(d) 180°
► (c) 90°
4. The angle whose complement is one-third of its supplement will be
(a) 135°
(b) 90°
(c) 180°
(d) 45°
► (d) 45°
5. If two parallel lines are cut by a transversal, then the pairs of ___________ angles are congruent.
(a) Equal
(b) Complementary
(c) Supplementary
(d) Corresponding
► (d) Corresponding
6. Given four points such that no three of them are collinear, then the number of lines that can be drawn through them are:
(a) 4 lines
(b) 8 lines
(c) 6 lines
(d) 2 lines
► (c) 6 lines
7. If two angles are complementary of each other, then each angle is :
(a) An Obtuse angle
(b) A Right angle
(c) An Acute angle
(d) A supplementary angle
► (c) An Acute angle
8. Two lines are parallel to each other, only when
(a) They do not intersect each other when extended on either side
(b) The lines lie on the same plane
(c) They are parallel to the plane in which they lie
(d) Their point of intersection is a unique point
► (a) They do not intersect each other when extended on either side
9. If two straight lines are perpendicular to a line l, then they are.
(a) The lines intersect each other when extended
(b) Parallel to each other
(c) The angle between the two lines is 180°
(d) Perpendicular to each other
► (b) Parallel to each other
10. The sum of two angles of a triangle is 116° and their difference is 24°. The measure of each angle of the triangle is
(a) 40°, 60°, 80°
(b) 70°, 46°, 64°
(c) 70°, 50°, 60°
(d) 60°, 90°, 30°
► (b) 70°, 46°, 64°
11. An exterior angle of triangle is 80° and the interior opposite angles are in the ratio 1:3. Measure of each interior opposite angle is:
(a) 30°, 60°
(b) 30°, 90°
(c) 40°, 120°
(d) 20°, 60°
► (d) 20°, 60°
12. The angles of a triangle are in the ratio 2:3:4.So, the degree measures of the angles are
(a) 20°, 30°, 40°
(b) 40°, 60°, 80°
(c) 80°, 20°, 80°
(d) 10°, 15°, 20°
► (b) 40°, 60°, 80°
13. The three angles of a triangle, one is twice the smallest and another one is thrice the smallest.find the angles
(a) 70°, 50°, 60°
(b) 40°, 60°, 80°
(c) 80°, 50°, 50°
(d) 60°, 90°, 30°
► (d) 60°, 90°, 30°
14. If two parallel lines are intersected by a transversal then, pair of alternate interior angles are:
(a) Equal
(b) Sum of the two angles is 360°
(c) Complementary
(d) Supplementary
► (a) Equal
15. If two interior angles on the same side of a transversal intersecting two parallel lines in the ratio 2:3 ,then find the larger of two angles.
(a) 72°
(b) 108°
(c) 54°
(d) 36°
► (b) 108°
16. Which one of the following is not correct?
(a) If two lines are intersected by a transversal, then alternate angles are equal.
(b) If two lines are intersected by a transversal then sum of the interior angles on the same side of transversal is 180°.
(c) If two lines are intersected by a transversal then corresponding angles are equal.
(d) AlI of these.
► (d) AlI of these.
17. There are four lines in a plane no two of which are parallel. The maximum number of points in which they can intersect is :
(a) 4
(b) 5
(c) 6
(d) 7
► (c) 6
18. If in triangle DEF, the greatest angle is twice the smallest and the third angle is 20 degrees more than the smallest, what are the angles?
(a) 20°, 40°, 40°
(b) 40°, 60°, 80°
(c) 30°, 50°, 100°
(d) 30°, 60°, 80°
► (b) 40°, 60°, 80°
19. X lies in the interior of ∠BAC. If ∠BAC = 70° and ∠BAX = 42° then ∠XAC =?
(a) 28°
(b) 29°
(c) 27°
(d) 30°
► (a) 28°
20. Which one of the following statements is not false?
(a) If two angles forms a linear pair, then each of these angles is of measure 90°.
(b) Angles forming a linear pair can both be acute angles.
(c) One of the angles forming a linear pair can be obtuse angle.
(d) Bisectors of the adjacent angles form a right angle.
► (c) One of the angles forming a linear pair can be obtuse angle.
21. If a transversal intersects two parallel lines, then the consecutive interior angles are
(a) equal
(b) congruent
(c) supplementary
(d) complementary
► (c) supplementary
22. If two parallel lines are intersected by a transversal, then the bisectors of any two corresponding angles are
(a) perpendicular
(b) bisect each other
(c) Intersect
(d) parallel
► (d) parallel
Hope the given MCQ Questions will help you in cracking exams with good marks. These Lines and Angles MCQ Questions will help you in practising more and more questions in less time.