Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 794 · 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 supplement of 151° (in degrees)?
2. 2.What is the supplement of 25° (in degrees)?
3. 3.What is the complement of 51° (in degrees)?
4. 4.What is the complement of 65° (in degrees)?
5. 5.Two parallel lines are cut by a transversal. One angle is 59°. What is its corresponding angle (in degrees)?
6. 6.What is the complement of 21° (in degrees)?
7. 7.What is the supplement of 143° (in degrees)?
8. 8.What is the complement of 61° (in degrees)?
9. 9.What is the complement of 17° (in degrees)?
10. 10.What is the supplement of 105° (in degrees)?
11. 11.What is the complement of 72° (in degrees)?
12. 12.Are 55° and 72° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
13. 13.Two straight lines cross each other. One of the angles formed is 38°. What is the angle vertically opposite to it (in degrees)?
14. 14.What is the supplement of 107° (in degrees)?
15. 15.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
16. 16.Two angles are supplementary. One is 110° more than the other. What is the bigger angle (in degrees)?
17. 17.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)?
18. 18.Two angles are complementary. One is 58° more than the other. What is the bigger angle (in degrees)?
19. 19.What is the complement of 27° (in degrees)?
20. 20.What is the supplement of 138° (in degrees)?
21. 21.Two parallel lines are cut by a transversal. One interior angle is 150°. What is its alternate interior angle (in degrees)?
22. 22.Two parallel lines are cut by a transversal. One interior angle is 76°. What is its alternate interior angle (in degrees)?
23. 23.What is the complement of 9° (in degrees)?
24. 24.Two straight lines cross each other. One of the angles formed is 54°. What is the angle next to it on the same line (in degrees)?
25. 25.What is the complement of 52° (in degrees)?
26. 26.Two straight lines cross each other. One of the angles formed is 94°. What is the angle next to it on the same line (in degrees)?
27. 27.What is the complement of 83° (in degrees)?
28. 28.Two angles are supplementary. One is 108° more than the other. What is the bigger angle (in degrees)?
29. 29.Two parallel lines are cut by a transversal. One interior angle is 48°. What is its other interior angle on the same side of the transversal (in degrees)?
30. 30.Two parallel lines are cut by a transversal. One interior angle is 107°. What is its alternate interior angle (in degrees)?
31. 31.Are 14° and 76° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
32. 32.What is the supplement of 15° (in degrees)?
33. 33.Two parallel lines are cut by a transversal. One interior angle is 71°. What is its alternate interior angle (in degrees)?
34. 34.What is the complement of 55° (in degrees)?
35. 35.Two parallel lines are cut by a transversal. One angle is 77°. What is its corresponding angle (in degrees)?
36. 36.What is the complement of 18° (in degrees)?
37. 37.Are 19° and 161° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
38. 38.What is the supplement of 53° (in degrees)?
39. 39.What is the supplement of 117° (in degrees)?
40. 40.Two angles are supplementary. One is 92° more than the other. What is the bigger angle (in degrees)?

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