Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 893 · 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 16° (in degrees)?
2. 2.What is the complement of 48° (in degrees)?
3. 3.What is the supplement of 163° (in degrees)?
4. 4.What is the complement of 44° (in degrees)?
5. 5.What is the supplement of 43° (in degrees)?
6. 6.Are 39° and 141° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
7. 7.Two straight lines cross each other. One of the angles formed is 21°. What is the angle vertically opposite to it (in degrees)?
8. 8.Two straight lines cross each other. One of the angles formed is 61°. What is the angle next to it on the same line (in degrees)?
9. 9.What is the complement of 69° (in degrees)?
10. 10.Two angles are supplementary. One is 30° more than the other. What is the bigger angle (in degrees)?
11. 11.What is the complement of 12° (in degrees)?
12. 12.Two straight lines cross each other. One of the angles formed is 131°. What is the angle next to it on the same line (in degrees)?
13. 13.What is the supplement of 144° (in degrees)?
14. 14.What is the complement of 27° (in degrees)?
15. 15.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
16. 16.Two parallel lines are cut by a transversal. One interior angle is 89°. What is its alternate interior angle (in degrees)?
17. 17.Two parallel lines are cut by a transversal. One angle is 83°. What is its corresponding angle (in degrees)?
18. 18.What is the supplement of 8° (in degrees)?
19. 19.What is the complement of 70° (in degrees)?
20. 20.What is the supplement of 152° (in degrees)?
21. 21.Two parallel lines are cut by a transversal. One interior angle is 140°. What is its alternate interior angle (in degrees)?
22. 22.What is the supplement of 146° (in degrees)?
23. 23.What is the supplement of 26° (in degrees)?
24. 24.Are 21° and 159° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
25. 25.What is the complement of 34° (in degrees)?
26. 26.What is the complement of 76° (in degrees)?
27. 27.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
28. 28.Two straight lines cross each other. One of the angles formed is 27°. What is the angle next to it on the same line (in degrees)?
29. 29.What is the complement of 35° (in degrees)?
30. 30.What is the supplement of 70° (in degrees)?
31. 31.Two straight lines cross each other. One of the angles formed is 23°. What is the angle vertically opposite to it (in degrees)?
32. 32.What is the supplement of 85° (in degrees)?
33. 33.What is the supplement of 32° (in degrees)?
34. 34.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
35. 35.Two straight lines cross each other. One of the angles formed is 143°. What is the angle vertically opposite to it (in degrees)?
36. 36.What is the supplement of 119° (in degrees)?
37. 37.Two angles are supplementary. One is 134° more than the other. What is the bigger angle (in degrees)?
38. 38.Are 76° and 14° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
39. 39.Two parallel lines are cut by a transversal. One angle is 31°. What is its corresponding angle (in degrees)?
40. 40.What is the complement of 20° (in degrees)?

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