Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 402 · 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 7° (in degrees)?
2. 2.What is the supplement of 136° (in degrees)?
3. 3.Two straight lines cross each other. One of the angles formed is 122°. What is the angle next to it on the same line (in degrees)?
4. 4.What is the complement of 8° (in degrees)?
5. 5.What is the complement of 12° (in degrees)?
6. 6.Are 50° and 40° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
7. 7.What is the supplement of 114° (in degrees)?
8. 8.What is the supplement of 118° (in degrees)?
9. 9.Two angles are supplementary. One is 64° more than the other. What is the bigger angle (in degrees)?
10. 10.What is the complement of 82° (in degrees)?
11. 11.Are 53° and 127° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
12. 12.Two parallel lines are cut by a transversal. One interior angle is 103°. What is its alternate interior angle (in degrees)?
13. 13.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
14. 14.Two straight lines cross each other. One of the angles formed is 140°. What is the angle next to it on the same line (in degrees)?
15. 15.What is the supplement of 65° (in degrees)?
16. 16.What is the supplement of 146° (in degrees)?
17. 17.What is the complement of 61° (in degrees)?
18. 18.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)?
19. 19.Are 73° and 107° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
20. 20.Are 61° and 29° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
21. 21.What is the supplement of 50° (in degrees)?
22. 22.What is the complement of 30° (in degrees)?
23. 23.Two parallel lines are cut by a transversal. One angle is 51°. What is its corresponding angle (in degrees)?
24. 24.Are 43° and 137° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
25. 25.Are 62° and 28° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
26. 26.What is the supplement of 26° (in degrees)?
27. 27.What is the supplement of 115° (in degrees)?
28. 28.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
29. 29.What is the complement of 60° (in degrees)?
30. 30.What is the complement of 43° (in degrees)?
31. 31.Two parallel lines are cut by a transversal. One interior angle is 67°. What is its alternate interior angle (in degrees)?
32. 32.Two parallel lines are cut by a transversal. One interior angle is 85°. What is its alternate interior angle (in degrees)?
33. 33.What is the supplement of 69° (in degrees)?
34. 34.Are 56° and 34° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
35. 35.What is the supplement of 120° (in degrees)?
36. 36.What is the supplement of 32° (in degrees)?
37. 37.What is the supplement of 12° (in degrees)?
38. 38.Two angles are supplementary. One is 38° more than the other. What is the bigger angle (in degrees)?
39. 39.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
40. 40.Two straight lines cross each other. One of the angles formed is 28°. What is the angle next to it on the same line (in degrees)?

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