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. Can we write ray OA as AO?
(a) Yes, it is the same
(b) No, the starting point is different
(c) Only if it is a line
(d) Sometimes

Answer: B

Question. Comparing two angles by putting one over the other is called...
(a) Addition
(b) Superimposition
(c) Drawing
(d) Measurement

Answer: B

Question. In a clock, angle between hands at 6 o'clock is...
(a) 90 degrees
(b) 180 degrees
(c) 360 degrees
(d) 30 degrees

Answer: B

Question. Why did ancient people use 360? One reason is that a year had about...
(a) 100 days
(b) 360 days
(c) 1000 days
(d) 30 days

Answer: B

Question. The common starting point in an angle is called...
(a) Arm
(b) Vertex
(c) Side
(d) Center

Answer: B

Question. Beam of light from a lighthouse is a model for...
(a) Point
(b) Line
(c) Ray
(d) Angle

Answer: C

Question. A straight angle is formed by a...
(a) Full turn
(b) Quarter turn
(c) Half turn
(d) No turn

Answer: C

Question. At 2 o'clock, the angle between clock hands is...
(a) 30 degrees
(b) 60 degrees
(c) 90 degrees
(d) 120 degrees

Answer: B

Question. An angle of 89 degrees is...
(a) Acute
(b) Right
(c) Obtuse
(d) Reflex

Answer: A

Question. Two lines that meet at right angles are called...
(a) Sleeping lines
(b) Parallel lines
(c) Perpendicular lines
(d) Matching lines

Answer: C