Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 654 · 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 34° and 118° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
2. 2.Two parallel lines are cut by a transversal. One interior angle is 37°. What is its alternate interior angle (in degrees)?
3. 3.Are 63° and 117° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
4. 4.Are 22° and 68° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
5. 5.What is the supplement of 128° (in degrees)?
6. 6.Two angles are supplementary. One is 68° more than the other. What is the bigger angle (in degrees)?
7. 7.What is the complement of 8° (in degrees)?
8. 8.Two straight lines cross each other. One of the angles formed is 25°. What is the angle next to it on the same line (in degrees)?
9. 9.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
10. 10.What is the supplement of 10° (in degrees)?
11. 11.Two parallel lines are cut by a transversal. One angle is 61°. What is its corresponding angle (in degrees)?
12. 12.What is the supplement of 32° (in degrees)?
13. 13.Are 78° and 102° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
14. 14.What is the complement of 83° (in degrees)?
15. 15.Two angles are supplementary. One is 70° more than the other. What is the bigger angle (in degrees)?
16. 16.What is the complement of 70° (in degrees)?
17. 17.What is the complement of 58° (in degrees)?
18. 18.What is the complement of 47° (in degrees)?
19. 19.Two straight lines cross each other. One of the angles formed is 87°. What is the angle next to it on the same line (in degrees)?
20. 20.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
21. 21.Two parallel lines are cut by a transversal. One angle is 118°. What is its corresponding angle (in degrees)?
22. 22.What is the supplement of 158° (in degrees)?
23. 23.What is the complement of 32° (in degrees)?
24. 24.Two angles are supplementary. One is 48° more than the other. What is the bigger angle (in degrees)?
25. 25.Two angles are supplementary. One is 50° more than the other. What is the bigger angle (in degrees)?
26. 26.Are 39° and 141° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
27. 27.What is the complement of 80° (in degrees)?
28. 28.What is the complement of 31° (in degrees)?
29. 29.Two angles are supplementary. One is 116° more than the other. What is the bigger angle (in degrees)?
30. 30.What is the supplement of 67° (in degrees)?
31. 31.Two straight lines cross each other. One of the angles formed is 39°. What is the angle next to it on the same line (in degrees)?
32. 32.Two straight lines cross each other. One of the angles formed is 39°. What is the angle vertically opposite to it (in degrees)?
33. 33.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
34. 34.Two angles are complementary. One is 58° more than the other. What is the bigger angle (in degrees)?
35. 35.What is the complement of 61° (in degrees)?
36. 36.What is the supplement of 174° (in degrees)?
37. 37.What is the complement of 25° (in degrees)?
38. 38.Are 60° and 120° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
39. 39.What is the complement of 57° (in degrees)?
40. 40.What is the supplement of 150° (in degrees)?

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