Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 465 · 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 straight lines cross each other. One of the angles formed is 29°. What is the angle vertically opposite to it (in degrees)?
2. 2.What is the supplement of 95° (in degrees)?
3. 3.What is the complement of 76° (in degrees)?
4. 4.What is the supplement of 26° (in degrees)?
5. 5.Two angles are supplementary. One is 128° more than the other. What is the bigger angle (in degrees)?
6. 6.What is the supplement of 20° (in degrees)?
7. 7.Two parallel lines are cut by a transversal. One interior angle is 125°. What is its alternate interior angle (in degrees)?
8. 8.What is the complement of 7° (in degrees)?
9. 9.What is the supplement of 85° (in degrees)?
10. 10.Are 32° and 149° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
11. 11.What is the supplement of 46° (in degrees)?
12. 12.What is the complement of 75° (in degrees)?
13. 13.What is the supplement of 37° (in degrees)?
14. 14.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
15. 15.Two straight lines cross each other. One of the angles formed is 24°. What is the angle vertically opposite to it (in degrees)?
16. 16.Two angles are supplementary. One is 4° more than the other. What is the bigger angle (in degrees)?
17. 17.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
18. 18.Are 55° and 35° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
19. 19.What is the complement of 39° (in degrees)?
20. 20.What is the supplement of 175° (in degrees)?
21. 21.Are 30° and 60° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
22. 22.Two straight lines cross each other. One of the angles formed is 130°. What is the angle vertically opposite to it (in degrees)?
23. 23.What is the complement of 43° (in degrees)?
24. 24.Two parallel lines are cut by a transversal. One interior angle is 37°. What is its other interior angle on the same side of the transversal (in degrees)?
25. 25.What is the complement of 78° (in degrees)?
26. 26.What is the supplement of 50° (in degrees)?
27. 27.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
28. 28.What is the supplement of 39° (in degrees)?
29. 29.Two angles are supplementary. One is 126° more than the other. What is the bigger angle (in degrees)?
30. 30.Two angles are supplementary. One is 46° more than the other. What is the bigger angle (in degrees)?
31. 31.What is the supplement of 16° (in degrees)?
32. 32.What is the complement of 9° (in degrees)?
33. 33.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
34. 34.Are 73° and 155° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
35. 35.Are 69° and 70° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
36. 36.Two straight lines cross each other. One of the angles formed is 73°. What is the angle vertically opposite to it (in degrees)?
37. 37.What is the complement of 45° (in degrees)?
38. 38.Two straight lines cross each other. One of the angles formed is 99°. What is the angle vertically opposite to it (in degrees)?
39. 39.What is the complement of 31° (in degrees)?
40. 40.What is the supplement of 115° (in degrees)?

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