CBSE Class 7 Mathematics Lines And Angles Worksheet Set A

CBSE Class 7 Maths Worksheet - Lines & Angles (2)

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Question. In the given Fig. i.e., ∠1 50 then find ∠2, ∠3, ∠4.

Answer : ∠2 = 130°, ∠3 = 50°, ∠4 = 130°

Question. Two angles of a linear pair are in the ratio 2 : 7, find the angles.
Answer : 40°, 140°

Question. Find the angle which is (1/5)th of its complementry angle.
Answer : 15°

Question. The difference in the measure of two supplementry angles is 80°, find the measures of the angles.
Answer : 50°, 130°

Question. Find complement of the following angles : m
(a) 20°
(b) 66°
(c) 40°
(d) 35°
Answer : (a) 70° (b) = 24° (c) 50° (d) = 55°

Question. Find the angle which is equal to its complement.
Answer : 45°

Question. An angle is greater than 80° than its supplement. What is its supplementary angle
Answer : 130°

Question. Two complementary angle are in the ratio 2 : 3, find the angles.
Answer : 36°, 54°

Question. Two supplementry angles are in the ratio 2 : 3, find the smallest angle.
Answer : 72°

Question. An angle is equal to 5 times its complement. Determine its measure.
Answer : 15°, 75°

Question. Find the angle which is equal to its supplement.
Answer : 90°

Question. An angle is 20° greater than its complementry angle. What is the complementry angle.
Answer : 35°

Question. An angle is equal to 8 times its supplement. Determine its measure.
Answer : 20°, 160°

Question. Find the angle which is one third of its supplementry angle.
Answer : 45°

Question. An angle is equal to double of its complement. Determine its measure
Answer : 60°

Question. Find supplement of the following angles.
(a) 105°
(b) 87°
(c) 154°
Answer : a = 75°; b = 93°; c = 26°

Question. An angle is greater than 30° than its complement. What the measurement of complementary angles?
Answer : 60°, 30°

Question. Two complementry angles are in the ratio 4 : 5, find the greater angle.
Answer : 50°

Question. An angle is greater than 60° than its supplementary angle. What is the supplementary angle?
Answer : 60°

Question. The difference of the measures of two complementry angles is 40°. Find the measures of the angles
Answer : 25°, 65°.

Question. Find the angle which is 9 times of its supplementry angle.
Answer : 162°

Question. Two supplementary angles are in the ratio 3 : 7, find the angles.
Answer : 54°, 126°

Question. Two angles of a linear pairs are in the ratio 1 : 5 find angles.
Answer : 30°, 150°

Question. Find the angle which is half of its complementary angle.
Answer : 30°

Question. Identify which of the following pair of angles are complementary and which are supplementary :
(a) 63°, 117°
(b) 23°, 67°
(c) 105°, 75°
(d) 120°, 60°.
Answer : Complementry = b, Supplementry = a, c, d

Question. An angle is greater then 25° than its complement. What is its complementary angle?
Answer : 57.5°

Question. An angle is equal to 3 times of its supplement. Determine its measure.
Answer : 135°

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