Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 106 · 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 supplement of 78° (in degrees)?
2. 2.What is the complement of 70° (in degrees)?
3. 3.What is the complement of 16° (in degrees)?
4. 4.What is the supplement of 105° (in degrees)?
5. 5.Two straight lines cross each other. One of the angles formed is 101°. What is the angle next to it on the same line (in degrees)?
6. 6.What is the complement of 24° (in degrees)?
7. 7.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
8. 8.Two parallel lines are cut by a transversal. One angle is 124°. What is its corresponding angle (in degrees)?
9. 9.Two straight lines cross each other. One of the angles formed is 48°. What is the angle next to it on the same line (in degrees)?
10. 10.What is the supplement of 120° (in degrees)?
11. 11.Are 12° and 78° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
12. 12.Are 28° and 11° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
13. 13.What is the supplement of 79° (in degrees)?
14. 14.What is the supplement of 57° (in degrees)?
15. 15.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
16. 16.What is the supplement of 127° (in degrees)?
17. 17.What is the supplement of 136° (in degrees)?
18. 18.Two angles are supplementary. One is 128° more than the other. What is the bigger angle (in degrees)?
19. 19.What is the complement of 31° (in degrees)?
20. 20.Two parallel lines are cut by a transversal. One interior angle is 117°. What is its alternate interior angle (in degrees)?
21. 21.Two parallel lines are cut by a transversal. One interior angle is 97°. What is its alternate interior angle (in degrees)?
22. 22.What is the supplement of 162° (in degrees)?
23. 23.Are 59° and 121° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
24. 24.What is the supplement of 46° (in degrees)?
25. 25.What is the complement of 39° (in degrees)?
26. 26.Two straight lines cross each other. One of the angles formed is 51°. What is the angle next to it on the same line (in degrees)?
27. 27.What is the supplement of 147° (in degrees)?
28. 28.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
29. 29.What is the supplement of 155° (in degrees)?
30. 30.Two parallel lines are cut by a transversal. One interior angle is 149°. What is its alternate interior angle (in degrees)?
31. 31.What is the complement of 43° (in degrees)?
32. 32.Are 68° and 22° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
33. 33.Two straight lines cross each other. One of the angles formed is 92°. What is the angle vertically opposite to it (in degrees)?
34. 34.What is the supplement of 106° (in degrees)?
35. 35.What is the supplement of 43° (in degrees)?
36. 36.What is the supplement of 154° (in degrees)?
37. 37.Two straight lines cross each other. One of the angles formed is 54°. What is the angle next to it on the same line (in degrees)?
38. 38.What is the supplement of 21° (in degrees)?
39. 39.Two parallel lines are cut by a transversal. One interior angle is 60°. What is its other interior angle on the same side of the transversal (in degrees)?
40. 40.What is the complement of 79° (in degrees)?

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