Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 993 · 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 supplement of 129° (in degrees)?
2. 2.What is the complement of 54° (in degrees)?
3. 3.Are 72° and 11° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
4. 4.Are 68° and 112° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
5. 5.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
6. 6.What is the supplement of 30° (in degrees)?
7. 7.What is the complement of 20° (in degrees)?
8. 8.What is the complement of 85° (in degrees)?
9. 9.Two straight lines cross each other. One of the angles formed is 104°. What is the angle vertically opposite to it (in degrees)?
10. 10.Are 59° and 74° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
11. 11.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
12. 12.Two straight lines cross each other. One of the angles formed is 158°. What is the angle next to it on the same line (in degrees)?
13. 13.Two angles are supplementary. One is 82° more than the other. What is the bigger angle (in degrees)?
14. 14.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
15. 15.What is the supplement of 20° (in degrees)?
16. 16.What is the supplement of 74° (in degrees)?
17. 17.Are 72° and 86° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
18. 18.What is the supplement of 121° (in degrees)?
19. 19.What is the complement of 22° (in degrees)?
20. 20.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
21. 21.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
22. 22.What is the complement of 23° (in degrees)?
23. 23.What is the complement of 77° (in degrees)?
24. 24.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
25. 25.What is the complement of 44° (in degrees)?
26. 26.What is the supplement of 33° (in degrees)?
27. 27.What is the supplement of 72° (in degrees)?
28. 28.What is the supplement of 164° (in degrees)?
29. 29.Are 65° and 25° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
30. 30.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
31. 31.What is the complement of 49° (in degrees)?
32. 32.What is the supplement of 51° (in degrees)?
33. 33.Two straight lines cross each other. One of the angles formed is 32°. What is the angle next to it on the same line (in degrees)?
34. 34.Are 49° and 41° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
35. 35.Two straight lines cross each other. One of the angles formed is 82°. What is the angle next to it on the same line (in degrees)?
36. 36.Are 12° and 78° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
37. 37.What is the complement of 11° (in degrees)?
38. 38.What is the complement of 25° (in degrees)?
39. 39.Are 18° and 5° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
40. 40.Are 78° and 102° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary

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