Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 388 · 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 complement of 76° (in degrees)?
2. 2.What is the complement of 29° (in degrees)?
3. 3.Two straight lines cross each other. One of the angles formed is 57°. What is the angle vertically opposite to it (in degrees)?
4. 4.What is the supplement of 171° (in degrees)?
5. 5.What is the complement of 36° (in degrees)?
6. 6.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)?
7. 7.Two straight lines cross each other. One of the angles formed is 36°. What is the angle vertically opposite to it (in degrees)?
8. 8.What is the supplement of 46° (in degrees)?
9. 9.Are 18° and 83° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
10. 10.What is the supplement of 102° (in degrees)?
11. 11.Are 76° and 14° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
12. 12.What is the complement of 70° (in degrees)?
13. 13.What is the supplement of 14° (in degrees)?
14. 14.What is the supplement of 9° (in degrees)?
15. 15.What is the supplement of 124° (in degrees)?
16. 16.Are 66° and 24° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
17. 17.What is the complement of 46° (in degrees)?
18. 18.What is the complement of 21° (in degrees)?
19. 19.Two straight lines cross each other. One of the angles formed is 61°. What is the angle vertically opposite to it (in degrees)?
20. 20.Two parallel lines are cut by a transversal. One angle is 42°. What is its corresponding angle (in degrees)?
21. 21.What is the complement of 53° (in degrees)?
22. 22.What is the complement of 47° (in degrees)?
23. 23.What is the complement of 28° (in degrees)?
24. 24.Two straight lines cross each other. One of the angles formed is 79°. What is the angle vertically opposite to it (in degrees)?
25. 25.What is the complement of 84° (in degrees)?
26. 26.Are 20° and 143° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
27. 27.What is the supplement of 117° (in degrees)?
28. 28.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
29. 29.Two angles are supplementary. One is 98° more than the other. What is the bigger angle (in degrees)?
30. 30.What is the complement of 22° (in degrees)?
31. 31.Two parallel lines are cut by a transversal. One interior angle is 59°. What is its alternate interior angle (in degrees)?
32. 32.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
33. 33.What is the complement of 40° (in degrees)?
34. 34.Two straight lines cross each other. One of the angles formed is 75°. What is the angle vertically opposite to it (in degrees)?
35. 35.What is the supplement of 157° (in degrees)?
36. 36.Two parallel lines are cut by a transversal. One interior angle is 65°. What is its alternate interior angle (in degrees)?
37. 37.What is the complement of 26° (in degrees)?
38. 38.What is the supplement of 57° (in degrees)?
39. 39.Two straight lines cross each other. One of the angles formed is 29°. What is the angle vertically opposite to it (in degrees)?
40. 40.What is the supplement of 142° (in degrees)?

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