Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 865 · 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 39° (in degrees)?
2. 2.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
3. 3.Are 30° and 86° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
4. 4.Two parallel lines are cut by a transversal. One angle is 47°. What is its corresponding angle (in degrees)?
5. 5.What is the supplement of 123° (in degrees)?
6. 6.Two parallel lines are cut by a transversal. One angle is 59°. What is its corresponding angle (in degrees)?
7. 7.Are 59° and 31° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
8. 8.Two angles are supplementary. One is 58° more than the other. What is the bigger angle (in degrees)?
9. 9.Two straight lines cross each other. One of the angles formed is 155°. What is the angle vertically opposite to it (in degrees)?
10. 10.What is the complement of 11° (in degrees)?
11. 11.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
12. 12.What is the supplement of 173° (in degrees)?
13. 13.What is the complement of 18° (in degrees)?
14. 14.What is the complement of 77° (in degrees)?
15. 15.Two parallel lines are cut by a transversal. One interior angle is 43°. What is its alternate interior angle (in degrees)?
16. 16.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
17. 17.Two straight lines cross each other. One of the angles formed is 134°. What is the angle vertically opposite to it (in degrees)?
18. 18.What is the supplement of 62° (in degrees)?
19. 19.What is the complement of 22° (in degrees)?
20. 20.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
21. 21.What is the supplement of 45° (in degrees)?
22. 22.Two angles are complementary. One is 58° more than the other. What is the bigger angle (in degrees)?
23. 23.What is the complement of 47° (in degrees)?
24. 24.What is the supplement of 130° (in degrees)?
25. 25.What is the complement of 5° (in degrees)?
26. 26.What is the complement of 78° (in degrees)?
27. 27.Are 32° and 148° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
28. 28.Two straight lines cross each other. One of the angles formed is 27°. What is the angle vertically opposite to it (in degrees)?
29. 29.Two straight lines cross each other. One of the angles formed is 23°. What is the angle next to it on the same line (in degrees)?
30. 30.What is the complement of 27° (in degrees)?
31. 31.What is the supplement of 107° (in degrees)?
32. 32.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
33. 33.What is the complement of 65° (in degrees)?
34. 34.Two straight lines cross each other. One of the angles formed is 73°. What is the angle vertically opposite to it (in degrees)?
35. 35.Two straight lines cross each other. One of the angles formed is 145°. What is the angle vertically opposite to it (in degrees)?
36. 36.Two parallel lines are cut by a transversal. One interior angle is 61°. What is its other interior angle on the same side of the transversal (in degrees)?
37. 37.What is the complement of 80° (in degrees)?
38. 38.What is the supplement of 164° (in degrees)?
39. 39.What is the complement of 57° (in degrees)?
40. 40.What is the complement of 53° (in degrees)?

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