Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 858 · 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 83° (in degrees)?
2. 2.Two angles are supplementary. One is 52° more than the other. What is the bigger angle (in degrees)?
3. 3.Two angles are supplementary. One is 114° more than the other. What is the bigger angle (in degrees)?
4. 4.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
5. 5.What is the supplement of 23° (in degrees)?
6. 6.What is the complement of 79° (in degrees)?
7. 7.What is the supplement of 77° (in degrees)?
8. 8.What is the complement of 85° (in degrees)?
9. 9.Two angles are supplementary. One is 24° more than the other. What is the bigger angle (in degrees)?
10. 10.Two straight lines cross each other. One of the angles formed is 63°. What is the angle next to it on the same line (in degrees)?
11. 11.Two parallel lines are cut by a transversal. One interior angle is 126°. What is its other interior angle on the same side of the transversal (in degrees)?
12. 12.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
13. 13.Are 26° and 17° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
14. 14.What is the supplement of 135° (in degrees)?
15. 15.Are 17° and 73° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
16. 16.What is the supplement of 156° (in degrees)?
17. 17.What is the complement of 50° (in degrees)?
18. 18.What is the supplement of 83° (in degrees)?
19. 19.What is the complement of 34° (in degrees)?
20. 20.Two parallel lines are cut by a transversal. One interior angle is 42°. What is its other interior angle on the same side of the transversal (in degrees)?
21. 21.Are 21° and 71° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
22. 22.What is the complement of 84° (in degrees)?
23. 23.What is the supplement of 132° (in degrees)?
24. 24.Two straight lines cross each other. One of the angles formed is 148°. What is the angle vertically opposite to it (in degrees)?
25. 25.What is the supplement of 80° (in degrees)?
26. 26.Two angles are supplementary. One is 88° more than the other. What is the bigger angle (in degrees)?
27. 27.Two parallel lines are cut by a transversal. One interior angle is 30°. What is its other interior angle on the same side of the transversal (in degrees)?
28. 28.What is the complement of 11° (in degrees)?
29. 29.What is the complement of 26° (in degrees)?
30. 30.Two straight lines cross each other. One of the angles formed is 45°. What is the angle next to it on the same line (in degrees)?
31. 31.Two straight lines cross each other. One of the angles formed is 120°. What is the angle vertically opposite to it (in degrees)?
32. 32.What is the complement of 68° (in degrees)?
33. 33.Are 74° and 60° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
34. 34.What is the complement of 13° (in degrees)?
35. 35.What is the supplement of 73° (in degrees)?
36. 36.What is the supplement of 121° (in degrees)?
37. 37.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
38. 38.Two parallel lines are cut by a transversal. One interior angle is 51°. What is its alternate interior angle (in degrees)?
39. 39.Two angles are supplementary. One is 54° more than the other. What is the bigger angle (in degrees)?
40. 40.What is the supplement of 22° (in degrees)?

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