Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 246 · 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 91° (in degrees)?
2. 2.Two straight lines cross each other. One of the angles formed is 58°. What is the angle vertically opposite to it (in degrees)?
3. 3.Are 12° and 78° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
4. 4.Two angles are supplementary. One is 100° more than the other. What is the bigger angle (in degrees)?
5. 5.What is the complement of 7° (in degrees)?
6. 6.What is the supplement of 175° (in degrees)?
7. 7.Are 75° and 15° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
8. 8.What is the complement of 60° (in degrees)?
9. 9.What is the supplement of 55° (in degrees)?
10. 10.What is the supplement of 143° (in degrees)?
11. 11.What is the supplement of 142° (in degrees)?
12. 12.Two angles are supplementary. One is 14° more than the other. What is the bigger angle (in degrees)?
13. 13.Two parallel lines are cut by a transversal. One interior angle is 81°. What is its alternate interior angle (in degrees)?
14. 14.What is the complement of 17° (in degrees)?
15. 15.What is the supplement of 169° (in degrees)?
16. 16.What is the supplement of 153° (in degrees)?
17. 17.What is the complement of 66° (in degrees)?
18. 18.What is the supplement of 75° (in degrees)?
19. 19.What is the complement of 71° (in degrees)?
20. 20.Are 55° and 35° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
21. 21.Two straight lines cross each other. One of the angles formed is 124°. What is the angle vertically opposite to it (in degrees)?
22. 22.Two parallel lines are cut by a transversal. One interior angle is 143°. What is its alternate interior angle (in degrees)?
23. 23.What is the supplement of 12° (in degrees)?
24. 24.What is the complement of 35° (in degrees)?
25. 25.Are 18° and 98° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
26. 26.What is the complement of 41° (in degrees)?
27. 27.What is the supplement of 23° (in degrees)?
28. 28.Two parallel lines are cut by a transversal. One interior angle is 140°. What is its other interior angle on the same side of the transversal (in degrees)?
29. 29.What is the complement of 51° (in degrees)?
30. 30.What is the supplement of 66° (in degrees)?
31. 31.Two parallel lines are cut by a transversal. One interior angle is 107°. What is its other interior angle on the same side of the transversal (in degrees)?
32. 32.Two parallel lines are cut by a transversal. One angle is 60°. What is its corresponding angle (in degrees)?
33. 33.Two straight lines cross each other. One of the angles formed is 95°. What is the angle next to it on the same line (in degrees)?
34. 34.What is the complement of 29° (in degrees)?
35. 35.Two straight lines cross each other. One of the angles formed is 20°. What is the angle vertically opposite to it (in degrees)?
36. 36.What is the supplement of 131° (in degrees)?
37. 37.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
38. 38.Two straight lines cross each other. One of the angles formed is 51°. What is the angle vertically opposite to it (in degrees)?
39. 39.Two straight lines cross each other. One of the angles formed is 104°. What is the angle next to it on the same line (in degrees)?
40. 40.Two angles are supplementary. One is 74° more than the other. What is the bigger angle (in degrees)?

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