Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 857 · 40 sums

The method (90, 180, equal): Complement of a = 90 − a. Supplement of a = 180 − a. Lines crossing: vertically opposite angles are equal; a linear pair adds up to 180°. Parallel lines: corresponding angles equal, alternate interior angles equal, interior angles on the same side add up to 180°. One angle d° more than the other: bigger = (total + d) ÷ 2.

1. 1.What is the complement of 16° (in degrees)?
2. 2.What is the complement of 72° (in degrees)?
3. 3.What is the supplement of 152° (in degrees)?
4. 4.What is the supplement of 84° (in degrees)?
5. 5.Two straight lines cross each other. One of the angles formed is 101°. What is the angle next to it on the same line (in degrees)?
6. 6.What is the supplement of 41° (in degrees)?
7. 7.What is the supplement of 174° (in degrees)?
8. 8.Are 58° and 122° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
9. 9.What is the supplement of 43° (in degrees)?
10. 10.Two straight lines cross each other. One of the angles formed is 133°. What is the angle vertically opposite to it (in degrees)?
11. 11.Are 28° and 62° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
12. 12.Are 67° and 23° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
13. 13.What is the complement of 83° (in degrees)?
14. 14.Two straight lines cross each other. One of the angles formed is 83°. What is the angle vertically opposite to it (in degrees)?
15. 15.What is the supplement of 108° (in degrees)?
16. 16.What is the complement of 18° (in degrees)?
17. 17.What is the complement of 64° (in degrees)?
18. 18.What is the supplement of 24° (in degrees)?
19. 19.Two straight lines cross each other. One of the angles formed is 93°. What is the angle vertically opposite to it (in degrees)?
20. 20.Are 50° and 40° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
21. 21.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
22. 22.What is the supplement of 69° (in degrees)?
23. 23.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
24. 24.Are 60° and 120° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
25. 25.Are 43° and 137° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
26. 26.Are 50° and 130° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
27. 27.Are 61° and 29° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
28. 28.What is the supplement of 90° (in degrees)?
29. 29.What is the complement of 45° (in degrees)?
30. 30.Two straight lines cross each other. One of the angles formed is 45°. What is the angle next to it on the same line (in degrees)?
31. 31.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
32. 32.Two straight lines cross each other. One of the angles formed is 51°. What is the angle vertically opposite to it (in degrees)?
33. 33.What is the complement of 40° (in degrees)?
34. 34.What is the complement of 39° (in degrees)?
35. 35.Two straight lines cross each other. One of the angles formed is 76°. What is the angle next to it on the same line (in degrees)?
36. 36.What is the supplement of 170° (in degrees)?
37. 37.What is the supplement of 173° (in degrees)?
38. 38.What is the complement of 49° (in degrees)?
39. 39.Two straight lines cross each other. One of the angles formed is 123°. What is the angle next to it on the same line (in degrees)?
40. 40.What is the complement of 73° (in degrees)?

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