Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 224 · 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 17° (in degrees)?
2. 2.Are 18° and 152° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
3. 3.What is the supplement of 62° (in degrees)?
4. 4.What is the supplement of 151° (in degrees)?
5. 5.Two straight lines cross each other. One of the angles formed is 153°. What is the angle vertically opposite to it (in degrees)?
6. 6.Two parallel lines are cut by a transversal. One angle is 132°. What is its corresponding angle (in degrees)?
7. 7.Are 52° and 38° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
8. 8.Two angles are supplementary. One is 32° more than the other. What is the bigger angle (in degrees)?
9. 9.Two angles are supplementary. One is 78° more than the other. What is the bigger angle (in degrees)?
10. 10.What is the supplement of 66° (in degrees)?
11. 11.What is the complement of 16° (in degrees)?
12. 12.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
13. 13.What is the complement of 81° (in degrees)?
14. 14.Two angles are supplementary. One is 40° more than the other. What is the bigger angle (in degrees)?
15. 15.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
16. 16.What is the supplement of 31° (in degrees)?
17. 17.What is the complement of 68° (in degrees)?
18. 18.Are 12° and 78° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
19. 19.Two straight lines cross each other. One of the angles formed is 154°. What is the angle next to it on the same line (in degrees)?
20. 20.Two angles are supplementary. One is 14° more than the other. What is the bigger angle (in degrees)?
21. 21.Are 63° and 117° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
22. 22.Are 40° and 50° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
23. 23.What is the supplement of 126° (in degrees)?
24. 24.What is the supplement of 53° (in degrees)?
25. 25.Two angles are supplementary. One is 38° more than the other. What is the bigger angle (in degrees)?
26. 26.What is the supplement of 131° (in degrees)?
27. 27.Two straight lines cross each other. One of the angles formed is 26°. What is the angle next to it on the same line (in degrees)?
28. 28.What is the complement of 43° (in degrees)?
29. 29.Two straight lines cross each other. One of the angles formed is 149°. What is the angle vertically opposite to it (in degrees)?
30. 30.What is the complement of 39° (in degrees)?
31. 31.What is the supplement of 55° (in degrees)?
32. 32.What is the supplement of 77° (in degrees)?
33. 33.What is the supplement of 40° (in degrees)?
34. 34.Two straight lines cross each other. One of the angles formed is 85°. What is the angle next to it on the same line (in degrees)?
35. 35.What is the supplement of 9° (in degrees)?
36. 36.Two straight lines cross each other. One of the angles formed is 132°. What is the angle next to it on the same line (in degrees)?
37. 37.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
38. 38.Are 29° and 151° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
39. 39.What is the complement of 70° (in degrees)?
40. 40.Are 28° and 62° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary

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