Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 530 · 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.Two straight lines cross each other. One of the angles formed is 130°. What is the angle vertically opposite to it (in degrees)?
2. 2.Are 16° and 125° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
3. 3.What is the complement of 28° (in degrees)?
4. 4.Two parallel lines are cut by a transversal. One interior angle is 58°. What is its other interior angle on the same side of the transversal (in degrees)?
5. 5.What is the complement of 75° (in degrees)?
6. 6.What is the complement of 54° (in degrees)?
7. 7.What is the supplement of 21° (in degrees)?
8. 8.What is the complement of 67° (in degrees)?
9. 9.Two angles are supplementary. One is 128° more than the other. What is the bigger angle (in degrees)?
10. 10.What is the supplement of 90° (in degrees)?
11. 11.What is the complement of 33° (in degrees)?
12. 12.Two angles are supplementary. One is 124° more than the other. What is the bigger angle (in degrees)?
13. 13.What is the complement of 68° (in degrees)?
14. 14.Two angles are supplementary. One is 138° more than the other. What is the bigger angle (in degrees)?
15. 15.What is the supplement of 103° (in degrees)?
16. 16.Two parallel lines are cut by a transversal. One angle is 52°. What is its corresponding angle (in degrees)?
17. 17.What is the supplement of 78° (in degrees)?
18. 18.What is the supplement of 175° (in degrees)?
19. 19.Two angles are supplementary. One is 28° more than the other. What is the bigger angle (in degrees)?
20. 20.Two angles are supplementary. One is 60° more than the other. What is the bigger angle (in degrees)?
21. 21.Two straight lines cross each other. One of the angles formed is 87°. What is the angle next to it on the same line (in degrees)?
22. 22.What is the complement of 70° (in degrees)?
23. 23.Two parallel lines are cut by a transversal. One interior angle is 106°. What is its other interior angle on the same side of the transversal (in degrees)?
24. 24.What is the supplement of 142° (in degrees)?
25. 25.What is the supplement of 31° (in degrees)?
26. 26.What is the supplement of 40° (in degrees)?
27. 27.What is the complement of 55° (in degrees)?
28. 28.Two angles are supplementary. One is 94° more than the other. What is the bigger angle (in degrees)?
29. 29.Two straight lines cross each other. One of the angles formed is 137°. What is the angle vertically opposite to it (in degrees)?
30. 30.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)?
31. 31.What is the supplement of 166° (in degrees)?
32. 32.Are 24° and 66° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
33. 33.Two parallel lines are cut by a transversal. One interior angle is 53°. What is its other interior angle on the same side of the transversal (in degrees)?
34. 34.What is the complement of 52° (in degrees)?
35. 35.Are 62° and 97° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
36. 36.Two straight lines cross each other. One of the angles formed is 85°. What is the angle vertically opposite to it (in degrees)?
37. 37.Two parallel lines are cut by a transversal. One interior angle is 84°. What is its alternate interior angle (in degrees)?
38. 38.What is the complement of 78° (in degrees)?
39. 39.What is the supplement of 68° (in degrees)?
40. 40.Two angles are supplementary. One is 12° more than the other. What is the bigger angle (in degrees)?

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