Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 501 · 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 angles are supplementary. One is 18° more than the other. What is the bigger angle (in degrees)?
2. 2.What is the supplement of 91° (in degrees)?
3. 3.Are 47° and 30° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
4. 4.What is the complement of 20° (in degrees)?
5. 5.What is the supplement of 157° (in degrees)?
6. 6.Two angles are supplementary. One is 12° more than the other. What is the bigger angle (in degrees)?
7. 7.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)?
8. 8.What is the complement of 32° (in degrees)?
9. 9.What is the supplement of 113° (in degrees)?
10. 10.What is the complement of 60° (in degrees)?
11. 11.Two straight lines cross each other. One of the angles formed is 35°. What is the angle vertically opposite to it (in degrees)?
12. 12.What is the supplement of 85° (in degrees)?
13. 13.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?
14. 14.Two straight lines cross each other. One of the angles formed is 75°. What is the angle next to it on the same line (in degrees)?
15. 15.What is the supplement of 104° (in degrees)?
16. 16.Two angles are supplementary. One is 14° more than the other. What is the bigger angle (in degrees)?
17. 17.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
18. 18.Are 37° and 53° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
19. 19.What is the supplement of 103° (in degrees)?
20. 20.What is the complement of 75° (in degrees)?
21. 21.What is the supplement of 172° (in degrees)?
22. 22.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
23. 23.What is the complement of 8° (in degrees)?
24. 24.Two straight lines cross each other. One of the angles formed is 139°. What is the angle next to it on the same line (in degrees)?
25. 25.Two straight lines cross each other. One of the angles formed is 149°. What is the angle vertically opposite to it (in degrees)?
26. 26.What is the supplement of 80° (in degrees)?
27. 27.Two angles are supplementary. One is 2° more than the other. What is the bigger angle (in degrees)?
28. 28.What is the supplement of 30° (in degrees)?
29. 29.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
30. 30.Two straight lines cross each other. One of the angles formed is 68°. What is the angle next to it on the same line (in degrees)?
31. 31.Are 23° and 157° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
32. 32.Two angles are supplementary. One is 112° more than the other. What is the bigger angle (in degrees)?
33. 33.Two angles are supplementary. One is 56° more than the other. What is the bigger angle (in degrees)?
34. 34.Two straight lines cross each other. One of the angles formed is 122°. What is the angle next to it on the same line (in degrees)?
35. 35.What is the complement of 54° (in degrees)?
36. 36.What is the supplement of 36° (in degrees)?
37. 37.Two parallel lines are cut by a transversal. One interior angle is 87°. What is its alternate interior angle (in degrees)?
38. 38.What is the complement of 26° (in degrees)?
39. 39.What is the complement of 28° (in degrees)?
40. 40.Are 25° and 163° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither

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