Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 905 · 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 20° (in degrees)?
2. 2.Two parallel lines are cut by a transversal. One angle is 32°. What is its corresponding angle (in degrees)?
3. 3.What is the complement of 53° (in degrees)?
4. 4.Two parallel lines are cut by a transversal. One angle is 123°. What is its corresponding angle (in degrees)?
5. 5.Two straight lines cross each other. One of the angles formed is 73°. What is the angle next to it on the same line (in degrees)?
6. 6.Two angles are supplementary. One is 48° more than the other. What is the bigger angle (in degrees)?
7. 7.What is the supplement of 46° (in degrees)?
8. 8.What is the supplement of 124° (in degrees)?
9. 9.What is the complement of 22° (in degrees)?
10. 10.What is the supplement of 169° (in degrees)?
11. 11.What is the complement of 49° (in degrees)?
12. 12.Are 79° and 16° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
13. 13.Two parallel lines are cut by a transversal. One interior angle is 43°. What is its alternate interior angle (in degrees)?
14. 14.What is the supplement of 164° (in degrees)?
15. 15.What is the supplement of 5° (in degrees)?
16. 16.What is the supplement of 42° (in degrees)?
17. 17.What is the supplement of 95° (in degrees)?
18. 18.What is the complement of 41° (in degrees)?
19. 19.Two straight lines cross each other. One of the angles formed is 57°. What is the angle next to it on the same line (in degrees)?
20. 20.What is the complement of 15° (in degrees)?
21. 21.What is the complement of 43° (in degrees)?
22. 22.Two parallel lines are cut by a transversal. One interior angle is 111°. What is its alternate interior angle (in degrees)?
23. 23.What is the complement of 42° (in degrees)?
24. 24.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)?
25. 25.Are 31° and 149° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
26. 26.Two straight lines cross each other. One of the angles formed is 43°. What is the angle vertically opposite to it (in degrees)?
27. 27.Are 27° and 153° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
28. 28.What is the complement of 32° (in degrees)?
29. 29.Two parallel lines are cut by a transversal. One angle is 39°. What is its corresponding angle (in degrees)?
30. 30.What is the complement of 51° (in degrees)?
31. 31.Two parallel lines are cut by a transversal. One interior angle is 126°. 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 83°. What is its corresponding angle (in degrees)?
33. 33.Are 65° and 85° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
34. 34.What is the complement of 56° (in degrees)?
35. 35.What is the complement of 62° (in degrees)?
36. 36.What is the complement of 36° (in degrees)?
37. 37.Two angles are supplementary. One is 102° more than the other. What is the bigger angle (in degrees)?
38. 38.What is the supplement of 131° (in degrees)?
39. 39.What is the complement of 77° (in degrees)?
40. 40.Two angles are supplementary. One is 64° more than the other. What is the bigger angle (in degrees)?

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