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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 994 · 40 sums
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.What is the complement of 21° (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One angle is 56°. What is its corresponding angle (in degrees)?
  3. 3.What is the complement of 54° (in degrees)?
  4. 4.Are 20° and 59° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  5. 5.What is the complement of 46° (in degrees)?
  6. 6.Are 35° and 55° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  7. 7.What is the supplement of 140° (in degrees)?
  8. 8.Are 68° and 112° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  9. 9.Are 45° and 36° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  10. 10.What is the supplement of 5° (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One angle is 88°. What is its corresponding angle (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 141°. What is the angle next to it on the same line (in degrees)?
  13. 13.Are 46° and 44° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  14. 14.What is the complement of 66° (in degrees)?
  15. 15.What is the complement of 48° (in degrees)?
  16. 16.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  17. 17.Two angles are supplementary. One is 104° more than the other. What is the bigger angle (in degrees)?
  18. 18.What is the complement of 18° (in degrees)?
  19. 19.What is the complement of 73° (in degrees)?
  20. 20.Are 58° and 32° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  21. 21.What is the complement of 12° (in degrees)?
  22. 22.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the complement of 77° (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 59°. What is the angle next to it on the same line (in degrees)?
  25. 25.What is the complement of 81° (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One angle is 142°. What is its corresponding angle (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One angle is 94°. What is its corresponding angle (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One angle is 49°. What is its corresponding angle (in degrees)?
  29. 29.Two angles are supplementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  30. 30.What is the complement of 35° (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 82°. What is the angle next to it on the same line (in degrees)?
  32. 32.What is the complement of 79° (in degrees)?
  33. 33.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  34. 34.Are 72° and 108° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  35. 35.Are 10° and 170° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  36. 36.Two parallel lines are cut by a transversal. One interior angle is 56°. What is its alternate interior angle (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 45°. What is the angle next to it on the same line (in degrees)?
  38. 38.What is the complement of 65° (in degrees)?
  39. 39.What is the supplement of 21° (in degrees)?
  40. 40.What is the supplement of 172° (in degrees)?

Answer key

  1. 69
  2. 56
  3. 36
  4. Neither
  5. 44
  6. Complementary
  7. 40
  8. Supplementary
  9. Neither
  10. 175
  11. 88
  12. 39
  13. Complementary
  14. 24
  15. 42
  16. 55
  17. 142
  18. 72
  19. 17
  20. Complementary
  21. 78
  22. 59
  23. 13
  24. 121
  25. 9
  26. 142
  27. 94
  28. 49
  29. 92
  30. 55
  31. 98
  32. 11
  33. 66
  34. Supplementary
  35. Supplementary
  36. 56
  37. 135
  38. 25
  39. 159
  40. 8

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