Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 691 · 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.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
2. 2.What is the supplement of 113° (in degrees)?
3. 3.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
4. 4.What is the supplement of 39° (in degrees)?
5. 5.What is the complement of 44° (in degrees)?
6. 6.What is the supplement of 53° (in degrees)?
7. 7.What is the supplement of 166° (in degrees)?
8. 8.Are 27° and 153° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
9. 9.What is the complement of 10° (in degrees)?
10. 10.Two straight lines cross each other. One of the angles formed is 75°. What is the angle next to it on the same line (in degrees)?
11. 11.What is the supplement of 116° (in degrees)?
12. 12.What is the complement of 72° (in degrees)?
13. 13.Two straight lines cross each other. One of the angles formed is 158°. What is the angle vertically opposite to it (in degrees)?
14. 14.Two angles are supplementary. One is 82° more than the other. What is the bigger angle (in degrees)?
15. 15.Two parallel lines are cut by a transversal. One interior angle is 87°. What is its alternate interior angle (in degrees)?
16. 16.What is the supplement of 162° (in degrees)?
17. 17.Two angles are supplementary. One is 88° more than the other. What is the bigger angle (in degrees)?
18. 18.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
19. 19.What is the supplement of 15° (in degrees)?
20. 20.What is the complement of 13° (in degrees)?
21. 21.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
22. 22.What is the complement of 31° (in degrees)?
23. 23.What is the complement of 23° (in degrees)?
24. 24.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
25. 25.Are 40° and 140° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
26. 26.What is the supplement of 9° (in degrees)?
27. 27.What is the supplement of 56° (in degrees)?
28. 28.What is the complement of 35° (in degrees)?
29. 29.Two angles are supplementary. One is 6° more than the other. What is the bigger angle (in degrees)?
30. 30.What is the complement of 27° (in degrees)?
31. 31.Two parallel lines are cut by a transversal. One interior angle is 96°. What is its other interior angle on the same side of the transversal (in degrees)?
32. 32.Two parallel lines are cut by a transversal. One angle is 51°. What is its corresponding angle (in degrees)?
33. 33.Two straight lines cross each other. One of the angles formed is 135°. What is the angle vertically opposite to it (in degrees)?
34. 34.What is the complement of 68° (in degrees)?
35. 35.Are 17° and 73° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
36. 36.Two straight lines cross each other. One of the angles formed is 157°. What is the angle next to it on the same line (in degrees)?
37. 37.What is the supplement of 51° (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 complement of 42° (in degrees)?
40. 40.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)?

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