Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 300 · 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 48° and 163° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
2. 2.Two straight lines cross each other. One of the angles formed is 55°. What is the angle next to it on the same line (in degrees)?
3. 3.Two straight lines cross each other. One of the angles formed is 29°. What is the angle next to it on the same line (in degrees)?
4. 4.Two straight lines cross each other. One of the angles formed is 148°. What is the angle vertically opposite to it (in degrees)?
5. 5.Two straight lines cross each other. One of the angles formed is 76°. What is the angle vertically opposite to it (in degrees)?
6. 6.What is the complement of 84° (in degrees)?
7. 7.Two angles are supplementary. One is 116° more than the other. What is the bigger angle (in degrees)?
8. 8.Are 22° and 158° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
9. 9.What is the supplement of 18° (in degrees)?
10. 10.Are 28° and 62° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
11. 11.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
12. 12.What is the supplement of 39° (in degrees)?
13. 13.Are 36° and 144° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
14. 14.Two straight lines cross each other. One of the angles formed is 100°. What is the angle vertically opposite to it (in degrees)?
15. 15.What is the complement of 22° (in degrees)?
16. 16.Two parallel lines are cut by a transversal. One angle is 108°. What is its corresponding angle (in degrees)?
17. 17.Two parallel lines are cut by a transversal. One angle is 30°. What is its corresponding angle (in degrees)?
18. 18.What is the supplement of 169° (in degrees)?
19. 19.Two angles are supplementary. One is 68° more than the other. What is the bigger angle (in degrees)?
20. 20.Two straight lines cross each other. One of the angles formed is 123°. What is the angle vertically opposite to it (in degrees)?
21. 21.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
22. 22.What is the complement of 41° (in degrees)?
23. 23.Are 10° and 170° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
24. 24.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
25. 25.Two angles are supplementary. One is 18° more than the other. What is the bigger angle (in degrees)?
26. 26.What is the supplement of 161° (in degrees)?
27. 27.What is the supplement of 155° (in degrees)?
28. 28.Are 21° and 69° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
29. 29.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
30. 30.Two parallel lines are cut by a transversal. One interior angle is 127°. What is its alternate interior angle (in degrees)?
31. 31.What is the complement of 15° (in degrees)?
32. 32.What is the supplement of 45° (in degrees)?
33. 33.What is the supplement of 113° (in degrees)?
34. 34.What is the supplement of 35° (in degrees)?
35. 35.What is the complement of 76° (in degrees)?
36. 36.What is the supplement of 126° (in degrees)?
37. 37.What is the supplement of 115° (in degrees)?
38. 38.What is the supplement of 166° (in degrees)?
39. 39.What is the supplement of 85° (in degrees)?
40. 40.What is the complement of 24° (in degrees)?

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