Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 314 · 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 11° and 79° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
2. 2.What is the complement of 14° (in degrees)?
3. 3.Two angles are supplementary. One is 8° more than the other. What is the bigger angle (in degrees)?
4. 4.What is the complement of 31° (in degrees)?
5. 5.What is the supplement of 174° (in degrees)?
6. 6.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
7. 7.Two straight lines cross each other. One of the angles formed is 38°. What is the angle next to it on the same line (in degrees)?
8. 8.Are 33° and 147° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
9. 9.Two straight lines cross each other. One of the angles formed is 74°. What is the angle next to it on the same line (in degrees)?
10. 10.What is the supplement of 111° (in degrees)?
11. 11.What is the complement of 52° (in degrees)?
12. 12.Two straight lines cross each other. One of the angles formed is 80°. What is the angle vertically opposite to it (in degrees)?
13. 13.What is the complement of 45° (in degrees)?
14. 14.What is the complement of 63° (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 36°. What is the angle next to it on the same line (in degrees)?
17. 17.Are 48° and 13° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
18. 18.Two parallel lines are cut by a transversal. One angle is 147°. What is its corresponding angle (in degrees)?
19. 19.Two straight lines cross each other. One of the angles formed is 159°. What is the angle next to it on the same line (in degrees)?
20. 20.What is the complement of 37° (in degrees)?
21. 21.What is the supplement of 58° (in degrees)?
22. 22.What is the supplement of 33° (in degrees)?
23. 23.Two straight lines cross each other. One of the angles formed is 128°. What is the angle vertically opposite to it (in degrees)?
24. 24.Two angles are supplementary. One is 76° more than the other. What is the bigger angle (in degrees)?
25. 25.What is the supplement of 100° (in degrees)?
26. 26.What is the supplement of 124° (in degrees)?
27. 27.What is the supplement of 120° (in degrees)?
28. 28.Two straight lines cross each other. One of the angles formed is 156°. What is the angle vertically opposite to it (in degrees)?
29. 29.Two straight lines cross each other. One of the angles formed is 64°. What is the angle vertically opposite to it (in degrees)?
30. 30.What is the supplement of 36° (in degrees)?
31. 31.Two angles are supplementary. One is 40° more than the other. What is the bigger angle (in degrees)?
32. 32.What is the supplement of 14° (in degrees)?
33. 33.What is the supplement of 127° (in degrees)?
34. 34.Two straight lines cross each other. One of the angles formed is 150°. What is the angle next to it on the same line (in degrees)?
35. 35.What is the complement of 41° (in degrees)?
36. 36.What is the complement of 85° (in degrees)?
37. 37.Are 20° and 160° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
38. 38.What is the supplement of 30° (in degrees)?
39. 39.What is the complement of 8° (in degrees)?
40. 40.What is the complement of 54° (in degrees)?

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