CBSE Class 6 Mathematics Lines and Angles MCQs Set A

Question. Which of the following correctly defines a line?
(a) A straight path that has two endpoints
(b) A portion of a line with one endpoint
(c) A straight path extending endlessly in both directions
(d) A curve that connects two points

Answer: C

Question. What is the degree measure of a straight angle?
(a) 90°
(b) 180°
(c) 360°
(d) 0°

Answer: B

Question. Which figure correctly shows a ray?
(a) A path from A to B with no endpoints
(b) A segment from A to B
(c) A line from A to B going beyond B
(d) A path starting from A and going endlessly through B

Answer: D

Question. Which angle is the result of a quarter-turn rotation?
(a) Acute angle
(b) Right angle
(c) Straight angle
(d) Reflex angle

Answer: B

Question. Which of the following is a correct representation of an obtuse angle?
(a) 45°
(b) 90°
(c) 135°
(d) 180°

Answer: C

Question. What is the common endpoint of two rays called?
(a) Line segment
(b) Vertex
(c) Angle
(d) Base

Answer: B

Question. If a fold divides a straight angle into two equal parts, what angle is formed?
(a) Straight angle
(b) Right angle
(c) Reflex angle
(d) Acute angle

Answer: B

Question. Which of these angles is reflex?
(a) 30°
(b) 120°
(c) 180°
(d) 270°

Answer: D

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

Answer: B

Question. Which tool is used to measure angles in degrees?
(a) Ruler
(b) Compass
(c) Protractor
(d) Divider

Answer: C

Question. Which angle is formed when the clock shows 3 o’clock?
(a) 30°
(b) 90°
(c) 120°
(d) 150°

Answer: B

Question. A protractor is used to
(a) Draw circles
(b) Measure line segments
(c) Measure angles in degrees
(d) Fold paper into halves

Answer: C

Question. What is the name of the angle formed by two rays with a common endpoint?
(a) Segment
(b) Line
(c) Angle
(d) Ray

Answer: C

Question. Which of the following has no length, breadth, or height?
(a) Point
(b) Line
(c) Angle
(d) Ray

Answer: A

Question. A reflex angle is
(a) Greater than 180° but less than 360°
(b) Equal to 90°
(c) Less than 90°
(d) Exactly 180°Exactly 180°

Answer: A

Question. What is the total degree measure in a full turn?
(a) 90°
(b) 180°
(c) 270°
(d) 360°

Answer: D

Question. The angle of an open door is an example of:
(a) Ray
(b) Right angle
(c) Angle in real life
(d) Straight line

Answer: C

Question. Which of the following is an example of a ray?
(a) A closed loop
(b) A beam of light from a lighthouse
(c) A line with two endpoints
(d) A straight angle

Answer: B

Question. How many rays form an angle?
(a) 1
(b) 2
(c) 3
(d) 4

Answer: B

Question. Which of the following is always written in the middle when naming an angle?
(a) Any arm
(b) Vertex
(c) Ray
(d) Segment

Answer: B

Question. A line can be extended
(a) In one direction only
(b) Between two fixed points
(c) Indefinitely in both directions
(d) Only to the left

Answer: C

Question. An angle of 90° is also known as:
(a) Acute
(b) Straight
(c) Reflex
(d) Right

Answer: D

Question. Which of the following angles is greater than a straight angle?
(a) 45°
(b) 135°
(c) 200°
(d) 180°

Answer: C

Question. What is the degree measure of a full rotation?
(a) 90°
(b) 180°
(c) 360°
(d) 270°

Answer: C

Question. Which part of a protractor is aligned with the vertex of the angle?
(a) Outer edge
(b) Centre point
(c) Straight edge
(d) Top scale

Answer: B

Question. If two angles measure 30° and 60°, they are both:
(a) Obtuse
(b) Reflex
(c) Right
(d) Acute

Answer: D

Question. Which angle is larger?
(a) Acute angle
(b) Right angle
(c) Obtuse angle
(d) Reflex angle

Answer: D

Question. Which angle is used to represent a perfect L-shape?
(a) 30°
(b) 45°
(c) 60°
(d) 90°

Answer: D

Question. What is the angle between two adjacent spokes of the Ashoka Chakra with 24 spokes?
(a) 10°
(b) 15°
(c) 20°
(d) 30°

Answer: B

Question. What is a line segment?
(a) A part of a line with two endpoints.
(b) A line that extends indefinitely in both directions.
(c) A portion of a line that starts at a point and goes in one direction.
(d) None of the above.

Answer: A