Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 403 · 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 supplement of 9° (in degrees)?
2. 2.Are 71° and 19° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
3. 3.Two parallel lines are cut by a transversal. One angle is 50°. What is its corresponding angle (in degrees)?
4. 4.What is the complement of 11° (in degrees)?
5. 5.What is the supplement of 145° (in degrees)?
6. 6.What is the supplement of 13° (in degrees)?
7. 7.Are 20° and 160° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
8. 8.What is the complement of 74° (in degrees)?
9. 9.Two straight lines cross each other. One of the angles formed is 52°. What is the angle vertically opposite to it (in degrees)?
10. 10.Two straight lines cross each other. One of the angles formed is 46°. What is the angle next to it on the same line (in degrees)?
11. 11.What is the complement of 36° (in degrees)?
12. 12.Two parallel lines are cut by a transversal. One angle is 133°. What is its corresponding angle (in degrees)?
13. 13.Are 76° and 14° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
14. 14.Two straight lines cross each other. One of the angles formed is 125°. What is the angle next to it on the same line (in degrees)?
15. 15.What is the complement of 20° (in degrees)?
16. 16.Two straight lines cross each other. One of the angles formed is 51°. What is the angle next to it on the same line (in degrees)?
17. 17.Two parallel lines are cut by a transversal. One interior angle is 34°. What is its alternate interior angle (in degrees)?
18. 18.Two parallel lines are cut by a transversal. One interior angle is 41°. What is its alternate interior angle (in degrees)?
19. 19.What is the supplement of 49° (in degrees)?
20. 20.Are 74° and 106° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
21. 21.What is the complement of 29° (in degrees)?
22. 22.Two parallel lines are cut by a transversal. One interior angle is 112°. What is its other interior angle on the same side of the transversal (in degrees)?
23. 23.What is the supplement of 54° (in degrees)?
24. 24.What is the supplement of 8° (in degrees)?
25. 25.What is the complement of 64° (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 complement of 12° (in degrees)?
28. 28.What is the supplement of 135° (in degrees)?
29. 29.What is the supplement of 36° (in degrees)?
30. 30.What is the complement of 13° (in degrees)?
31. 31.What is the complement of 81° (in degrees)?
32. 32.What is the complement of 83° (in degrees)?
33. 33.Two parallel lines are cut by a transversal. One interior angle is 150°. What is its alternate interior angle (in degrees)?
34. 34.What is the complement of 77° (in degrees)?
35. 35.What is the supplement of 80° (in degrees)?
36. 36.Two parallel lines are cut by a transversal. One interior angle is 43°. What is its other interior angle on the same side of the transversal (in degrees)?
37. 37.Two angles are supplementary. One is 90° more than the other. What is the bigger angle (in degrees)?
38. 38.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
39. 39.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
40. 40.What is the supplement of 87° (in degrees)?

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