Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 253 · 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 18° (in degrees)?
2. 2.Two straight lines cross each other. One of the angles formed is 36°. What is the angle vertically opposite to it (in degrees)?
3. 3.Two angles are supplementary. One is 30° more than the other. What is the bigger angle (in degrees)?
4. 4.Are 14° and 166° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
5. 5.What is the complement of 45° (in degrees)?
6. 6.What is the complement of 30° (in degrees)?
7. 7.What is the complement of 17° (in degrees)?
8. 8.What is the complement of 67° (in degrees)?
9. 9.What is the supplement of 5° (in degrees)?
10. 10.What is the supplement of 72° (in degrees)?
11. 11.What is the supplement of 148° (in degrees)?
12. 12.Two straight lines cross each other. One of the angles formed is 29°. What is the angle vertically opposite to it (in degrees)?
13. 13.Are 67° and 23° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
14. 14.What is the complement of 42° (in degrees)?
15. 15.Are 63° and 25° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
16. 16.Two straight lines cross each other. One of the angles formed is 149°. What is the angle next to it on the same line (in degrees)?
17. 17.Are 62° and 24° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
18. 18.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
19. 19.Are 57° and 33° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
20. 20.What is the complement of 43° (in degrees)?
21. 21.Two straight lines cross each other. One of the angles formed is 116°. What is the angle vertically opposite to it (in degrees)?
22. 22.Two straight lines cross each other. One of the angles formed is 83°. What is the angle next to it on the same line (in degrees)?
23. 23.Are 10° and 132° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
24. 24.What is the supplement of 18° (in degrees)?
25. 25.What is the complement of 63° (in degrees)?
26. 26.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
27. 27.What is the supplement of 125° (in degrees)?
28. 28.Are 28° and 41° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
29. 29.Are 18° and 162° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
30. 30.Two angles are supplementary. One is 62° more than the other. What is the bigger angle (in degrees)?
31. 31.Two angles are supplementary. One is 100° more than the other. What is the bigger angle (in degrees)?
32. 32.What is the complement of 51° (in degrees)?
33. 33.What is the complement of 32° (in degrees)?
34. 34.Two parallel lines are cut by a transversal. One angle is 69°. What is its corresponding angle (in degrees)?
35. 35.Two parallel lines are cut by a transversal. One interior angle is 135°. What is its alternate interior angle (in degrees)?
36. 36.What is the complement of 23° (in degrees)?
37. 37.What is the complement of 72° (in degrees)?
38. 38.Are 35° and 55° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
39. 39.What is the supplement of 158° (in degrees)?
40. 40.What is the complement of 36° (in degrees)?

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