Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 287 · 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 49° and 41° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
2. 2.Two parallel lines are cut by a transversal. One interior angle is 115°. What is its other interior angle on the same side of the transversal (in degrees)?
3. 3.What is the supplement of 26° (in degrees)?
4. 4.Two angles are complementary. One is 4° more than the other. What is the bigger angle (in degrees)?
5. 5.Two parallel lines are cut by a transversal. One angle is 42°. What is its corresponding angle (in degrees)?
6. 6.What is the supplement of 5° (in degrees)?
7. 7.What is the complement of 68° (in degrees)?
8. 8.What is the complement of 71° (in degrees)?
9. 9.Are 60° and 30° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
10. 10.What is the supplement of 12° (in degrees)?
11. 11.Are 42° and 48° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
12. 12.Are 67° and 7° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
13. 13.Two straight lines cross each other. One of the angles formed is 60°. What is the angle vertically opposite to it (in degrees)?
14. 14.What is the supplement of 38° (in degrees)?
15. 15.Two parallel lines are cut by a transversal. One interior angle is 90°. What is its alternate interior angle (in degrees)?
16. 16.What is the complement of 21° (in degrees)?
17. 17.What is the supplement of 23° (in degrees)?
18. 18.Two angles are supplementary. One is 120° more than the other. What is the bigger angle (in degrees)?
19. 19.What is the complement of 79° (in degrees)?
20. 20.What is the supplement of 9° (in degrees)?
21. 21.What is the supplement of 85° (in degrees)?
22. 22.What is the supplement of 174° (in degrees)?
23. 23.Two straight lines cross each other. One of the angles formed is 29°. What is the angle next to it on the same line (in degrees)?
24. 24.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
25. 25.Are 17° and 163° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
26. 26.Are 48° and 132° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
27. 27.Two straight lines cross each other. One of the angles formed is 67°. What is the angle vertically opposite to it (in degrees)?
28. 28.What is the complement of 20° (in degrees)?
29. 29.Two parallel lines are cut by a transversal. One interior angle is 143°. What is its alternate interior angle (in degrees)?
30. 30.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
31. 31.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
32. 32.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?
33. 33.Two straight lines cross each other. One of the angles formed is 33°. What is the angle next to it on the same line (in degrees)?
34. 34.What is the complement of 15° (in degrees)?
35. 35.Two parallel lines are cut by a transversal. One interior angle is 105°. What is its other interior angle on the same side of the transversal (in degrees)?
36. 36.What is the supplement of 152° (in degrees)?
37. 37.What is the supplement of 45° (in degrees)?
38. 38.What is the complement of 56° (in degrees)?
39. 39.What is the complement of 7° (in degrees)?
40. 40.What is the supplement of 6° (in degrees)?

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