Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 167 · 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 149° (in degrees)?
2. 2.What is the supplement of 131° (in degrees)?
3. 3.What is the complement of 31° (in degrees)?
4. 4.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
5. 5.Two straight lines cross each other. One of the angles formed is 147°. What is the angle vertically opposite to it (in degrees)?
6. 6.What is the complement of 27° (in degrees)?
7. 7.Two angles are supplementary. One is 28° more than the other. What is the bigger angle (in degrees)?
8. 8.What is the complement of 37° (in degrees)?
9. 9.Are 45° and 144° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
10. 10.Are 23° and 27° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
11. 11.What is the complement of 20° (in degrees)?
12. 12.What is the complement of 43° (in degrees)?
13. 13.What is the supplement of 168° (in degrees)?
14. 14.Two straight lines cross each other. One of the angles formed is 80°. What is the angle vertically opposite to it (in degrees)?
15. 15.What is the supplement of 13° (in degrees)?
16. 16.Are 68° and 170° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
17. 17.Two angles are supplementary. One is 86° more than the other. What is the bigger angle (in degrees)?
18. 18.Two straight lines cross each other. One of the angles formed is 104°. What is the angle vertically opposite to it (in degrees)?
19. 19.Are 37° and 143° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
20. 20.What is the complement of 70° (in degrees)?
21. 21.Are 52° and 38° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
22. 22.Are 32° and 58° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
23. 23.Two angles are supplementary. One is 122° more than the other. What is the bigger angle (in degrees)?
24. 24.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
25. 25.Two parallel lines are cut by a transversal. One interior angle is 136°. What is its alternate interior angle (in degrees)?
26. 26.What is the complement of 58° (in degrees)?
27. 27.What is the complement of 33° (in degrees)?
28. 28.What is the complement of 23° (in degrees)?
29. 29.What is the supplement of 136° (in degrees)?
30. 30.Two straight lines cross each other. One of the angles formed is 52°. What is the angle next to it on the same line (in degrees)?
31. 31.Are 23° and 67° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
32. 32.What is the supplement of 116° (in degrees)?
33. 33.Two parallel lines are cut by a transversal. One angle is 36°. What is its corresponding angle (in degrees)?
34. 34.Two parallel lines are cut by a transversal. One angle is 56°. What is its corresponding angle (in degrees)?
35. 35.Two straight lines cross each other. One of the angles formed is 32°. What is the angle next to it on the same line (in degrees)?
36. 36.What is the complement of 22° (in degrees)?
37. 37.What is the supplement of 133° (in degrees)?
38. 38.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)?
39. 39.What is the complement of 65° (in degrees)?
40. 40.What is the supplement of 137° (in degrees)?

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