Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 718 · 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 10° (in degrees)?
2. 2.Two angles are supplementary. One is 118° more than the other. What is the bigger angle (in degrees)?
3. 3.Are 35° and 55° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
4. 4.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
5. 5.What is the complement of 38° (in degrees)?
6. 6.Are 48° and 132° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
7. 7.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
8. 8.Are 78° and 12° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
9. 9.What is the complement of 11° (in degrees)?
10. 10.Two angles are complementary. One is 4° more than the other. What is the bigger angle (in degrees)?
11. 11.What is the supplement of 24° (in degrees)?
12. 12.What is the complement of 19° (in degrees)?
13. 13.What is the complement of 66° (in degrees)?
14. 14.What is the supplement of 146° (in degrees)?
15. 15.What is the supplement of 25° (in degrees)?
16. 16.Two straight lines cross each other. One of the angles formed is 141°. What is the angle vertically opposite to it (in degrees)?
17. 17.What is the supplement of 134° (in degrees)?
18. 18.Two straight lines cross each other. One of the angles formed is 46°. What is the angle vertically opposite to it (in degrees)?
19. 19.Are 64° and 116° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
20. 20.Two parallel lines are cut by a transversal. One interior angle is 56°. What is its other interior angle on the same side of the transversal (in degrees)?
21. 21.What is the supplement of 26° (in degrees)?
22. 22.What is the complement of 9° (in degrees)?
23. 23.What is the complement of 69° (in degrees)?
24. 24.Two straight lines cross each other. One of the angles formed is 134°. What is the angle vertically opposite to it (in degrees)?
25. 25.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
26. 26.What is the supplement of 152° (in degrees)?
27. 27.Two angles are supplementary. One is 24° more than the other. What is the bigger angle (in degrees)?
28. 28.What is the complement of 21° (in degrees)?
29. 29.What is the complement of 35° (in degrees)?
30. 30.Are 45° and 135° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
31. 31.Two parallel lines are cut by a transversal. One angle is 148°. What is its corresponding angle (in degrees)?
32. 32.What is the complement of 22° (in degrees)?
33. 33.Are 19° and 40° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
34. 34.What is the supplement of 40° (in degrees)?
35. 35.Two straight lines cross each other. One of the angles formed is 127°. What is the angle vertically opposite to it (in degrees)?
36. 36.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
37. 37.Two parallel lines are cut by a transversal. One angle is 97°. What is its corresponding angle (in degrees)?
38. 38.Two angles are supplementary. One is 20° more than the other. What is the bigger angle (in degrees)?
39. 39.What is the supplement of 58° (in degrees)?
40. 40.What is the supplement of 71° (in degrees)?

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