Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 448 · 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 interior angle is 113°. What is its other interior angle on the same side of the transversal (in degrees)?
2. 2.What is the supplement of 25° (in degrees)?
3. 3.Two angles are supplementary. One is 26° more than the other. What is the bigger angle (in degrees)?
4. 4.Two straight lines cross each other. One of the angles formed is 112°. What is the angle next to it on the same line (in degrees)?
5. 5.What is the supplement of 42° (in degrees)?
6. 6.What is the complement of 50° (in degrees)?
7. 7.Are 33° and 147° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
8. 8.Two straight lines cross each other. One of the angles formed is 118°. What is the angle next to it on the same line (in degrees)?
9. 9.What is the supplement of 121° (in degrees)?
10. 10.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
11. 11.What is the supplement of 123° (in degrees)?
12. 12.What is the supplement of 141° (in degrees)?
13. 13.What is the complement of 6° (in degrees)?
14. 14.Are 51° and 39° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
15. 15.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?
16. 16.What is the complement of 49° (in degrees)?
17. 17.Are 77° and 103° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
18. 18.What is the supplement of 30° (in degrees)?
19. 19.What is the supplement of 82° (in degrees)?
20. 20.What is the complement of 25° (in degrees)?
21. 21.Two straight lines cross each other. One of the angles formed is 23°. What is the angle vertically opposite to it (in degrees)?
22. 22.Are 52° and 38° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
23. 23.Two angles are supplementary. One is 8° more than the other. What is the bigger angle (in degrees)?
24. 24.Two straight lines cross each other. One of the angles formed is 121°. What is the angle next to it on the same line (in degrees)?
25. 25.What is the complement of 82° (in degrees)?
26. 26.What is the complement of 83° (in degrees)?
27. 27.What is the supplement of 148° (in degrees)?
28. 28.Two angles are supplementary. One is 46° more than the other. What is the bigger angle (in degrees)?
29. 29.Two angles are complementary. One is 58° more than the other. What is the bigger angle (in degrees)?
30. 30.Are 80° and 10° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
31. 31.Two parallel lines are cut by a transversal. One angle is 44°. What is its corresponding angle (in degrees)?
32. 32.Are 22° and 68° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
33. 33.What is the complement of 12° (in degrees)?
34. 34.Are 21° and 69° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
35. 35.What is the complement of 54° (in degrees)?
36. 36.What is the supplement of 138° (in degrees)?
37. 37.Two straight lines cross each other. One of the angles formed is 67°. What is the angle next to it on the same line (in degrees)?
38. 38.What is the supplement of 168° (in degrees)?
39. 39.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
40. 40.Two angles are supplementary. One is 40° more than the other. What is the bigger angle (in degrees)?

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