Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 511 · 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 18° more than the other. What is the bigger angle (in degrees)?
2. 2.Are 42° and 81° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
3. 3.What is the complement of 28° (in degrees)?
4. 4.What is the supplement of 152° (in degrees)?
5. 5.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
6. 6.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
7. 7.What is the supplement of 13° (in degrees)?
8. 8.Two straight lines cross each other. One of the angles formed is 32°. What is the angle vertically opposite to it (in degrees)?
9. 9.What is the supplement of 132° (in degrees)?
10. 10.Are 77° and 165° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
11. 11.What is the supplement of 116° (in degrees)?
12. 12.Are 79° and 75° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
13. 13.Two straight lines cross each other. One of the angles formed is 63°. What is the angle vertically opposite to it (in degrees)?
14. 14.What is the complement of 6° (in degrees)?
15. 15.Two parallel lines are cut by a transversal. One interior angle is 102°. What is its other interior angle on the same side of the transversal (in degrees)?
16. 16.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
17. 17.Are 50° and 40° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
18. 18.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
19. 19.What is the complement of 84° (in degrees)?
20. 20.Two angles are supplementary. One is 60° more than the other. What is the bigger angle (in degrees)?
21. 21.What is the supplement of 64° (in degrees)?
22. 22.What is the complement of 18° (in degrees)?
23. 23.What is the complement of 59° (in degrees)?
24. 24.Two parallel lines are cut by a transversal. One interior angle is 93°. What is its other interior angle on the same side of the transversal (in degrees)?
25. 25.What is the complement of 34° (in degrees)?
26. 26.What is the complement of 33° (in degrees)?
27. 27.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
28. 28.What is the supplement of 139° (in degrees)?
29. 29.What is the supplement of 45° (in degrees)?
30. 30.Are 21° and 69° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
31. 31.What is the complement of 68° (in degrees)?
32. 32.Are 77° and 103° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
33. 33.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
34. 34.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
35. 35.What is the complement of 36° (in degrees)?
36. 36.What is the complement of 62° (in degrees)?
37. 37.What is the supplement of 85° (in degrees)?
38. 38.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
39. 39.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
40. 40.What is the supplement of 55° (in degrees)?

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