Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 52 · 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 77° (in degrees)?
2. 2.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
3. 3.What is the supplement of 137° (in degrees)?
4. 4.Two straight lines cross each other. One of the angles formed is 117°. What is the angle next to it on the same line (in degrees)?
5. 5.What is the supplement of 126° (in degrees)?
6. 6.Two straight lines cross each other. One of the angles formed is 66°. What is the angle vertically opposite to it (in degrees)?
7. 7.What is the complement of 67° (in degrees)?
8. 8.What is the supplement of 64° (in degrees)?
9. 9.Are 75° and 104° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
10. 10.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
11. 11.Two parallel lines are cut by a transversal. One interior angle is 59°. What is its alternate interior angle (in degrees)?
12. 12.Are 20° and 137° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
13. 13.What is the supplement of 116° (in degrees)?
14. 14.What is the complement of 53° (in degrees)?
15. 15.What is the complement of 30° (in degrees)?
16. 16.What is the complement of 7° (in degrees)?
17. 17.Two angles are supplementary. One is 30° more than the other. What is the bigger angle (in degrees)?
18. 18.Are 38° and 74° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
19. 19.Are 30° and 150° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
20. 20.Are 18° and 162° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
21. 21.What is the supplement of 34° (in degrees)?
22. 22.What is the supplement of 7° (in degrees)?
23. 23.What is the complement of 49° (in degrees)?
24. 24.Two parallel lines are cut by a transversal. One interior angle is 76°. What is its alternate interior angle (in degrees)?
25. 25.What is the supplement of 170° (in degrees)?
26. 26.Are 54° and 126° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
27. 27.Are 25° and 6° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
28. 28.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
29. 29.Are 22° and 68° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
30. 30.What is the complement of 26° (in degrees)?
31. 31.What is the complement of 68° (in degrees)?
32. 32.Two straight lines cross each other. One of the angles formed is 103°. What is the angle next to it on the same line (in degrees)?
33. 33.Are 32° and 148° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
34. 34.What is the supplement of 155° (in degrees)?
35. 35.Are 69° and 21° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
36. 36.What is the complement of 80° (in degrees)?
37. 37.Two straight lines cross each other. One of the angles formed is 157°. What is the angle vertically opposite to it (in degrees)?
38. 38.What is the complement of 22° (in degrees)?
39. 39.What is the supplement of 118° (in degrees)?
40. 40.Two parallel lines are cut by a transversal. One angle is 126°. What is its corresponding angle (in degrees)?

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