Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 565 · 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.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
2. 2.What is the supplement of 121° (in degrees)?
3. 3.What is the supplement of 75° (in degrees)?
4. 4.What is the complement of 49° (in degrees)?
5. 5.What is the complement of 56° (in degrees)?
6. 6.Two angles are supplementary. One is 54° more than the other. What is the bigger angle (in degrees)?
7. 7.Are 35° and 140° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
8. 8.What is the supplement of 13° (in degrees)?
9. 9.What is the complement of 13° (in degrees)?
10. 10.Are 76° and 162° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
11. 11.What is the supplement of 81° (in degrees)?
12. 12.Are 50° and 40° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
13. 13.What is the complement of 79° (in degrees)?
14. 14.Two straight lines cross each other. One of the angles formed is 152°. What is the angle next to it on the same line (in degrees)?
15. 15.Two straight lines cross each other. One of the angles formed is 106°. What is the angle next to it on the same line (in degrees)?
16. 16.Two straight lines cross each other. One of the angles formed is 37°. What is the angle vertically opposite to it (in degrees)?
17. 17.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
18. 18.Two angles are supplementary. One is 126° more than the other. What is the bigger angle (in degrees)?
19. 19.What is the complement of 19° (in degrees)?
20. 20.Two parallel lines are cut by a transversal. One angle is 128°. What is its corresponding angle (in degrees)?
21. 21.Two straight lines cross each other. One of the angles formed is 83°. What is the angle vertically opposite to it (in degrees)?
22. 22.Two straight lines cross each other. One of the angles formed is 136°. What is the angle next to it on the same line (in degrees)?
23. 23.What is the supplement of 70° (in degrees)?
24. 24.What is the complement of 35° (in degrees)?
25. 25.What is the complement of 28° (in degrees)?
26. 26.Two parallel lines are cut by a transversal. One interior angle is 120°. What is its alternate interior angle (in degrees)?
27. 27.What is the complement of 55° (in degrees)?
28. 28.What is the complement of 10° (in degrees)?
29. 29.Are 21° and 69° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
30. 30.Two straight lines cross each other. One of the angles formed is 63°. What is the angle next to it on the same line (in degrees)?
31. 31.Two straight lines cross each other. One of the angles formed is 61°. What is the angle vertically opposite to it (in degrees)?
32. 32.Are 36° and 144° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
33. 33.Are 67° and 23° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
34. 34.What is the complement of 65° (in degrees)?
35. 35.What is the supplement of 41° (in degrees)?
36. 36.What is the complement of 77° (in degrees)?
37. 37.Two parallel lines are cut by a transversal. One interior angle is 87°. What is its alternate interior angle (in degrees)?
38. 38.What is the complement of 34° (in degrees)?
39. 39.What is the supplement of 153° (in degrees)?
40. 40.Are 32° and 148° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary

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