ASSERTION-REASONING WORKSHEET
Chapter: Lines and Angles FOR DOWNLOAD PDF CLICK HERE
Class: 6 | NCERT Maths Chapter 2
✍🏽 Choose the correct option:
(A) Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
(B) Both Assertion and Reason are true, but Reason is not the correct explanation.
(C) Assertion is true, but Reason is false.
(D) Assertion is false, but Reason is true.
Q1.
Assertion (A): An angle of 90° is called a right angle.
Reason (R): A straight angle measures 90°.
Option: ___
Q2.
Assertion (A): A line segment has two end points.
Reason (R): A line segment extends endlessly in both directions.
Option: ___
Q3.
Assertion (A): Two rays with the same endpoint form an angle.
Reason (R): An angle is formed by two lines intersecting.
Option: ___
Q4.
Assertion (A): An angle more than 90° but less than 180° is an obtuse angle.
Reason (R): Acute angles are smaller than obtuse angles.
Option: ___
Q5.
Assertion (A): Two lines in the same plane that never meet are called parallel lines.
Reason (R): Parallel lines always intersect.
Option: ___
Q6.
Assertion (A): The measure of a straight angle is 180°.
Reason (R): A straight angle forms a straight line.
Option: ___
Q7.
Assertion (A): A complete angle measures 360°.
Reason (R): It is formed when one arm of the angle makes a full turn.
Option: ___
Q8.
Assertion (A): The arms of an angle are two line segments.
Reason (R): Angles are formed only by rays, not segments.
Option: ___
Q9.
Assertion (A): A pair of opposite rays forms a straight angle.
Reason (R): Opposite rays go in exactly opposite directions and form a line.
Option: ___
Q10.
Assertion (A): A triangle has three angles.
Reason (R): The sum of the interior angles of a triangle is 360°.
Option: ___
Q11.
Assertion (A): Adjacent angles share a common vertex and one common arm.
Reason (R): Adjacent angles always form a straight angle.
Option: ___
Q12.
Assertion (A): An angle measuring 45° is an acute angle.
Reason (R): Acute angles are always less than 90°.
Option: ___
Q13.
Assertion (A): An angle measuring 135° is an obtuse angle.
Reason (R): All angles more than 90° and less than 180° are obtuse angles.
Option: ___
Q14.
Assertion (A): Intersecting lines meet at one point.
Reason (R): They can meet at more than one point if extended.
Option: ___
Q15.
Assertion (A): Two perpendicular lines meet at a right angle.
Reason (R): A right angle measures exactly 90°.
Option: ___
Q16.
Assertion (A): A ray has a fixed starting point but no end point.
Reason (R): A ray extends infinitely in one direction.
Option: ___
Q17.
Assertion (A): An angle of 0° is called a zero angle.
Reason (R): When both arms of an angle are along the same line in the same direction, it forms 0°.
Option: ___
Q18.
Assertion (A): Vertical (vertically opposite) angles are always equal.
Reason (R): They are formed when two lines intersect.
Option: ___
Q19.
Assertion (A): Angles on a straight line add up to 180°.
Reason (R): They are called supplementary angles.
Option: ___
Q20.
Assertion (A): A protractor is used to measure angles.
Reason (R): A ruler can only measure straight lines, not angles.
Option: ___
ANSWER KEY CLICK HERE
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