CBSE Class 6 Mathematics Lines and Angles MCQs Set B

Question. Which of the following angles is greater than a right angle but less than a straight angle?
(a) Acute angle
(b) Obtuse angle
(c) Reflex angle
(d) Right angle

Answer: B

Question. If you are facing South and turn through a straight angle in which direction will you face now?
(a) South
(b) North
(c) East
(d) West

Answer: B

Question. How many degrees does a straight angle measure?
(a) 45°
(b) 90°
(c) 120°
(d) 180°

Answer: D

Question. If the sum of two angles is greater than 1800, then which of the following is not possible for the two angles? Competency Based Question
(a) One obtuse angle and one acute angle
(b) One reflex angle and one acute angle
(c) Two obtuse angles
(d) Two right angles

Answer: D

Question. The hands of a clock form a 90° angle at:
(a) 3 o’clock
(b) 6 o’clock
(c) 9 o’clock
(d) 12 o’clock

Answer: A

Question. Name the type of triangle formed, If the angles of a given triangle are in the ratio of 5 : 3 : 7.
(а) an acute-angled triangle
(b) an obtuse-angled triangle
(c) a right-angled triangle
(d) an isosceles triangle.

Answer: A

Question. The degree measure of the angle between two adjacent spokes in the Ashoka Chakra is:
(a) 30°
(b) 45°
(c) 15°
(d) 60°

Answer: A

Question. 179 ° is an example of
(a) a straight angle
(b) an obtuse angle
(c) an acute angle
(d) a right angle

Answer: B

Question. A line extends:
(a) From a point to another point
(b) Indefinitely in both directions
(c) In one direction
(d) In a circular path

Answer: C

Question. The hands of a clock form which type of angle at 12:00?
(a) Acute
(b) Right
(c) Straight
(d) Zero

Answer: D

Question. If one angle of a triangle is equal to the sum of the other two angles of the same triangle, then the triangle is said to be
(a) an isosceles triangle
(b) an obtuse-angled triangle
(c) an equilateral triangle
(d) a right triangle

Answer: D

Question. A right angle is:
(a) Less than 90°
(b) 90°
(c) More than 90° but less than 180°
(d) 180°

Answer: B

Question. An obtuse angle is greater than:
(a) 90°
(b) 180°
(c) 45°
(d) 30°

Answer: A

Question. Which of the following has two end points?
(a) Ray
(b) Line
(c) Line segment
(d) None of these

Answer: C

Question. Which angle is used to describe half a turn?
(a) Acute
(b) Right
(c) Straight
(d) Reflex

Answer: C

Question. The measure of a straight angle is
(a) 90°
(b) 45°.
(c) 180°
(d) 60°

Answer: C

Question. How do we write the angle at point B formed by two lines AB and BC?
(a) ∠BCA
(b) ∠CAB
(c) ∠ABC
(d) ∠BAC

Answer: C

Question. A protractor is used to draw and measure
(a) angles
(b) line segments
(c) triangle
(d) none of these

Answer: A

Question. What does "superimposition" help compare?
(a) Points
(b) Angles
(c) Line segments
(d) Rays

Answer: B

Question. The angle measure for one complete revolution is
(a) 180°
(b) 360°
(c) 90°
(d) none of these

Answer: B

Question. A protractor divides a half-circle into how many degrees?
(a) 90°
(b) 180°
(c) 270°
(d) 360°

Answer: B

Question. How is the measure of an angle expressed?
(a) Protractor
(b) Compasses
(c) Degrees
(d) Centimetres

Answer: C

Question. The letter ‘L’ forms what type of angle?
(a) Reflex
(b) Obtuse
(c) Right
(d) Acute

Answer: C

Question. The measure of an obtuse angle is
(a) < 90°
(b) > 90°
(c) = 90°
(d) none of these

Answer: B

Question. How many right angles make a straight angle?
(a) 1
(b) 2
(c) 3
(d) 4

Answer: B

Question. Which of the following angles is the measure of an acute angle?
(a) 30°
(b) 90°
(c) 120°
(d) 240°

Answer: A

Question. How many angles are formed when two lines intersect?
(a) 1
(b) 2
(c) 3
(d) 4

Answer: D

Question. Which of the following angles is classified as obtuse?
(a) 60°
(b) 90°
(c) 120°
(d) 45°

Answer: C

Question. An angle of 270° is called a:
(a) Right angle
(b) Reflex angle
(c) Straight angle
(d) Full angle

Answer: B

Question. How many acute angles can a triangle have?
(a) 1
(b) 2
(c) 3
(d) 4

Answer: C

Question. One angle of a triangle is 75°. If the difference of the other two angles of a triangle is 35°, then the biggest angle of the other two angles are
(a) 80°
(b) 75°
(c) 70°
(d) 135°

Answer: C