Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 8 · 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 58° (in degrees)?
2. 2.What is the supplement of 106° (in degrees)?
3. 3.What is the supplement of 9° (in degrees)?
4. 4.What is the complement of 24° (in degrees)?
5. 5.Two parallel lines are cut by a transversal. One interior angle is 43°. What is its alternate interior angle (in degrees)?
6. 6.What is the supplement of 95° (in degrees)?
7. 7.Are 22° and 68° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
8. 8.What is the complement of 13° (in degrees)?
9. 9.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
10. 10.Two parallel lines are cut by a transversal. One interior angle is 139°. What is its alternate interior angle (in degrees)?
11. 11.What is the complement of 28° (in degrees)?
12. 12.Two parallel lines are cut by a transversal. One interior angle is 150°. What is its other interior angle on the same side of the transversal (in degrees)?
13. 13.What is the supplement of 51° (in degrees)?
14. 14.Two straight lines cross each other. One of the angles formed is 126°. What is the angle next to it on the same line (in degrees)?
15. 15.What is the supplement of 80° (in degrees)?
16. 16.What is the supplement of 36° (in degrees)?
17. 17.Two straight lines cross each other. One of the angles formed is 67°. What is the angle next to it on the same line (in degrees)?
18. 18.What is the supplement of 21° (in degrees)?
19. 19.What is the supplement of 27° (in degrees)?
20. 20.What is the complement of 20° (in degrees)?
21. 21.What is the supplement of 120° (in degrees)?
22. 22.Are 26° and 21° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
23. 23.Two angles are supplementary. One is 74° more than the other. What is the bigger angle (in degrees)?
24. 24.Two straight lines cross each other. One of the angles formed is 140°. What is the angle vertically opposite to it (in degrees)?
25. 25.Are 35° and 55° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
26. 26.What is the supplement of 170° (in degrees)?
27. 27.Two angles are supplementary. One is 30° more than the other. What is the bigger angle (in degrees)?
28. 28.Two parallel lines are cut by a transversal. One interior angle is 38°. What is its alternate interior angle (in degrees)?
29. 29.What is the supplement of 79° (in degrees)?
30. 30.Are 11° and 79° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
31. 31.Are 71° and 158° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
32. 32.Two straight lines cross each other. One of the angles formed is 78°. What is the angle vertically opposite to it (in degrees)?
33. 33.Two angles are complementary. One is 4° more than the other. What is the bigger angle (in degrees)?
34. 34.What is the supplement of 75° (in degrees)?
35. 35.Are 49° and 41° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
36. 36.What is the complement of 9° (in degrees)?
37. 37.What is the complement of 39° (in degrees)?
38. 38.Are 58° and 122° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
39. 39.Two parallel lines are cut by a transversal. One interior angle is 109°. What is its other interior angle on the same side of the transversal (in degrees)?
40. 40.What is the complement of 29° (in degrees)?

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