Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 312 · 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.Are 35° and 55° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
2. 2.What is the complement of 33° (in degrees)?
3. 3.What is the complement of 34° (in degrees)?
4. 4.What is the complement of 15° (in degrees)?
5. 5.What is the supplement of 81° (in degrees)?
6. 6.What is the supplement of 146° (in degrees)?
7. 7.Two angles are supplementary. One is 96° more than the other. What is the bigger angle (in degrees)?
8. 8.What is the supplement of 95° (in degrees)?
9. 9.What is the supplement of 105° (in degrees)?
10. 10.Two parallel lines are cut by a transversal. One angle is 147°. What is its corresponding angle (in degrees)?
11. 11.What is the supplement of 43° (in degrees)?
12. 12.What is the supplement of 91° (in degrees)?
13. 13.What is the supplement of 94° (in degrees)?
14. 14.What is the supplement of 119° (in degrees)?
15. 15.What is the complement of 85° (in degrees)?
16. 16.Two angles are supplementary. One is 106° more than the other. What is the bigger angle (in degrees)?
17. 17.Two angles are supplementary. One is 64° more than the other. What is the bigger angle (in degrees)?
18. 18.What is the supplement of 31° (in degrees)?
19. 19.Two angles are supplementary. One is 40° more than the other. What is the bigger angle (in degrees)?
20. 20.What is the supplement of 129° (in degrees)?
21. 21.What is the supplement of 48° (in degrees)?
22. 22.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)?
23. 23.Two straight lines cross each other. One of the angles formed is 152°. What is the angle vertically opposite to it (in degrees)?
24. 24.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
25. 25.What is the supplement of 151° (in degrees)?
26. 26.What is the supplement of 46° (in degrees)?
27. 27.Two parallel lines are cut by a transversal. One interior angle is 36°. What is its alternate interior angle (in degrees)?
28. 28.Are 54° and 36° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
29. 29.What is the complement of 64° (in degrees)?
30. 30.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)?
31. 31.What is the complement of 53° (in degrees)?
32. 32.What is the supplement of 87° (in degrees)?
33. 33.Are 77° and 148° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
34. 34.Two straight lines cross each other. One of the angles formed is 86°. What is the angle vertically opposite to it (in degrees)?
35. 35.What is the complement of 61° (in degrees)?
36. 36.What is the complement of 29° (in degrees)?
37. 37.What is the complement of 21° (in degrees)?
38. 38.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
39. 39.Two parallel lines are cut by a transversal. One interior angle is 38°. What is its other interior angle on the same side of the transversal (in degrees)?
40. 40.What is the complement of 10° (in degrees)?

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