Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 965 · 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.Are 69° and 99° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
2. 2.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
3. 3.What is the supplement of 72° (in degrees)?
4. 4.Are 49° and 131° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
5. 5.Two angles are supplementary. One is 6° more than the other. What is the bigger angle (in degrees)?
6. 6.What is the supplement of 126° (in degrees)?
7. 7.Two straight lines cross each other. One of the angles formed is 138°. What is the angle next to it on the same line (in degrees)?
8. 8.What is the complement of 72° (in degrees)?
9. 9.What is the supplement of 132° (in degrees)?
10. 10.What is the supplement of 145° (in degrees)?
11. 11.What is the supplement of 109° (in degrees)?
12. 12.What is the complement of 56° (in degrees)?
13. 13.What is the supplement of 65° (in degrees)?
14. 14.Two parallel lines are cut by a transversal. One interior angle is 62°. What is its alternate interior angle (in degrees)?
15. 15.Are 39° and 122° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
16. 16.Two straight lines cross each other. One of the angles formed is 130°. What is the angle next to it on the same line (in degrees)?
17. 17.Two straight lines cross each other. One of the angles formed is 21°. What is the angle vertically opposite to it (in degrees)?
18. 18.What is the supplement of 121° (in degrees)?
19. 19.Are 45° and 135° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
20. 20.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
21. 21.Two parallel lines are cut by a transversal. One interior angle is 65°. What is its alternate interior angle (in degrees)?
22. 22.What is the supplement of 136° (in degrees)?
23. 23.What is the supplement of 111° (in degrees)?
24. 24.Two parallel lines are cut by a transversal. One angle is 108°. What is its corresponding angle (in degrees)?
25. 25.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
26. 26.Two parallel lines are cut by a transversal. One angle is 115°. What is its corresponding angle (in degrees)?
27. 27.Two straight lines cross each other. One of the angles formed is 50°. What is the angle vertically opposite to it (in degrees)?
28. 28.What is the complement of 73° (in degrees)?
29. 29.Two angles are supplementary. One is 84° more than the other. What is the bigger angle (in degrees)?
30. 30.What is the complement of 71° (in degrees)?
31. 31.What is the supplement of 38° (in degrees)?
32. 32.What is the complement of 74° (in degrees)?
33. 33.Two angles are supplementary. One is 128° more than the other. What is the bigger angle (in degrees)?
34. 34.What is the supplement of 94° (in degrees)?
35. 35.What is the complement of 42° (in degrees)?
36. 36.Two parallel lines are cut by a transversal. One interior angle is 141°. What is its alternate interior angle (in degrees)?
37. 37.What is the complement of 69° (in degrees)?
38. 38.What is the complement of 34° (in degrees)?
39. 39.Two angles are supplementary. One is 112° more than the other. What is the bigger angle (in degrees)?
40. 40.Two parallel lines are cut by a transversal. One interior angle is 123°. What is its other interior angle on the same side of the transversal (in degrees)?

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