Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 738 · 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 parallel lines are cut by a transversal. One angle is 51°. What is its corresponding angle (in degrees)?
2. 2.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
3. 3.Are 65° and 115° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
4. 4.What is the complement of 41° (in degrees)?
5. 5.What is the complement of 7° (in degrees)?
6. 6.Are 10° and 16° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
7. 7.What is the supplement of 39° (in degrees)?
8. 8.What is the supplement of 152° (in degrees)?
9. 9.What is the supplement of 167° (in degrees)?
10. 10.Are 10° and 80° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
11. 11.What is the supplement of 91° (in degrees)?
12. 12.Two angles are supplementary. One is 96° more than the other. What is the bigger angle (in degrees)?
13. 13.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
14. 14.What is the complement of 24° (in degrees)?
15. 15.What is the complement of 72° (in degrees)?
16. 16.Are 61° and 38° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
17. 17.Two angles are supplementary. One is 34° more than the other. What is the bigger angle (in degrees)?
18. 18.Are 19° and 45° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
19. 19.Are 53° and 153° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
20. 20.What is the supplement of 162° (in degrees)?
21. 21.Are 41° and 139° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
22. 22.What is the complement of 6° (in degrees)?
23. 23.Two straight lines cross each other. One of the angles formed is 135°. What is the angle vertically opposite to it (in degrees)?
24. 24.What is the supplement of 9° (in degrees)?
25. 25.Two parallel lines are cut by a transversal. One interior angle is 116°. What is its other interior angle on the same side of the transversal (in degrees)?
26. 26.What is the supplement of 165° (in degrees)?
27. 27.Are 30° and 100° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
28. 28.What is the supplement of 34° (in degrees)?
29. 29.Two straight lines cross each other. One of the angles formed is 105°. What is the angle vertically opposite to it (in degrees)?
30. 30.What is the complement of 55° (in degrees)?
31. 31.What is the supplement of 151° (in degrees)?
32. 32.Two parallel lines are cut by a transversal. One interior angle is 100°. What is its other interior angle on the same side of the transversal (in degrees)?
33. 33.What is the complement of 61° (in degrees)?
34. 34.What is the supplement of 99° (in degrees)?
35. 35.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
36. 36.What is the supplement of 85° (in degrees)?
37. 37.Are 25° and 65° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
38. 38.What is the complement of 36° (in degrees)?
39. 39.What is the supplement of 109° (in degrees)?
40. 40.Are 70° and 20° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary

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