Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 510 · 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.Are 69° and 21° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
2. 2.Are 40° and 140° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
3. 3.What is the supplement of 135° (in degrees)?
4. 4.Two angles are supplementary. One is 64° more than the other. What is the bigger angle (in degrees)?
5. 5.What is the complement of 10° (in degrees)?
6. 6.What is the supplement of 23° (in degrees)?
7. 7.Two parallel lines are cut by a transversal. One angle is 42°. What is its corresponding angle (in degrees)?
8. 8.What is the supplement of 171° (in degrees)?
9. 9.What is the complement of 12° (in degrees)?
10. 10.Two parallel lines are cut by a transversal. One interior angle is 137°. What is its other interior angle on the same side of the transversal (in degrees)?
11. 11.Two angles are supplementary. One is 80° more than the other. What is the bigger angle (in degrees)?
12. 12.What is the complement of 15° (in degrees)?
13. 13.What is the complement of 67° (in degrees)?
14. 14.Are 21° and 69° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
15. 15.What is the complement of 42° (in degrees)?
16. 16.What is the supplement of 14° (in degrees)?
17. 17.What is the complement of 8° (in degrees)?
18. 18.Two parallel lines are cut by a transversal. One interior angle is 54°. What is its alternate interior angle (in degrees)?
19. 19.Two parallel lines are cut by a transversal. One interior angle is 111°. What is its alternate interior angle (in degrees)?
20. 20.What is the supplement of 103° (in degrees)?
21. 21.What is the supplement of 151° (in degrees)?
22. 22.What is the complement of 82° (in degrees)?
23. 23.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
24. 24.What is the supplement of 80° (in degrees)?
25. 25.Two parallel lines are cut by a transversal. One interior angle is 113°. What is its other interior angle on the same side of the transversal (in degrees)?
26. 26.Two straight lines cross each other. One of the angles formed is 47°. What is the angle vertically opposite to it (in degrees)?
27. 27.Two straight lines cross each other. One of the angles formed is 42°. What is the angle vertically opposite to it (in degrees)?
28. 28.What is the supplement of 54° (in degrees)?
29. 29.What is the complement of 85° (in degrees)?
30. 30.What is the supplement of 67° (in degrees)?
31. 31.What is the complement of 26° (in degrees)?
32. 32.Are 48° and 115° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
33. 33.Are 34° and 146° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
34. 34.Two parallel lines are cut by a transversal. One interior angle is 41°. What is its alternate interior angle (in degrees)?
35. 35.What is the complement of 25° (in degrees)?
36. 36.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
37. 37.What is the complement of 23° (in degrees)?
38. 38.What is the supplement of 15° (in degrees)?
39. 39.What is the supplement of 102° (in degrees)?
40. 40.What is the supplement of 128° (in degrees)?

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