Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 909 · 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 77° (in degrees)?
2. 2.Are 62° and 135° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
3. 3.What is the supplement of 9° (in degrees)?
4. 4.Are 60° and 120° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
5. 5.What is the supplement of 71° (in degrees)?
6. 6.Two angles are complementary. One is 42° 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 61°. What is the angle vertically opposite to it (in degrees)?
8. 8.What is the supplement of 86° (in degrees)?
9. 9.What is the supplement of 34° (in degrees)?
10. 10.What is the supplement of 62° (in degrees)?
11. 11.Two angles are supplementary. One is 34° more than the other. What is the bigger angle (in degrees)?
12. 12.Two straight lines cross each other. One of the angles formed is 61°. What is the angle next to it on the same line (in degrees)?
13. 13.What is the supplement of 87° (in degrees)?
14. 14.Are 14° and 166° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
15. 15.What is the supplement of 8° (in degrees)?
16. 16.What is the complement of 35° (in degrees)?
17. 17.What is the complement of 26° (in degrees)?
18. 18.What is the complement of 46° (in degrees)?
19. 19.What is the supplement of 119° (in degrees)?
20. 20.Two angles are supplementary. One is 18° more than the other. What is the bigger angle (in degrees)?
21. 21.What is the supplement of 45° (in degrees)?
22. 22.What is the complement of 42° (in degrees)?
23. 23.What is the complement of 24° (in degrees)?
24. 24.What is the complement of 65° (in degrees)?
25. 25.Two straight lines cross each other. One of the angles formed is 154°. What is the angle next to it on the same line (in degrees)?
26. 26.What is the complement of 63° (in degrees)?
27. 27.Two parallel lines are cut by a transversal. One interior angle is 94°. What is its other interior angle on the same side of the transversal (in degrees)?
28. 28.Are 30° and 150° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
29. 29.Two straight lines cross each other. One of the angles formed is 68°. What is the angle vertically opposite to it (in degrees)?
30. 30.Two straight lines cross each other. One of the angles formed is 71°. What is the angle vertically opposite to it (in degrees)?
31. 31.What is the complement of 49° (in degrees)?
32. 32.What is the complement of 61° (in degrees)?
33. 33.What is the supplement of 68° (in degrees)?
34. 34.Are 29° and 61° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
35. 35.Two parallel lines are cut by a transversal. One angle is 103°. What is its corresponding angle (in degrees)?
36. 36.Two straight lines cross each other. One of the angles formed is 136°. What is the angle vertically opposite to it (in degrees)?
37. 37.What is the complement of 8° (in degrees)?
38. 38.Two parallel lines are cut by a transversal. One interior angle is 57°. What is its other interior angle on the same side of the transversal (in degrees)?
39. 39.Two parallel lines are cut by a transversal. One interior angle is 69°. What is its other interior angle on the same side of the transversal (in degrees)?
40. 40.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)?

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