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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 974 · 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.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One interior angle is 85°. What is its alternate interior angle (in degrees)?
  3. 3.What is the supplement of 15° (in degrees)?
  4. 4.Are 45° and 45° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  5. 5.Two angles are supplementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the supplement of 92° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 21°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 142°. What is the angle vertically opposite to it (in degrees)?
  9. 9.Are 28° and 101° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  10. 10.Are 21° and 38° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  11. 11.Are 18° and 72° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  12. 12.What is the supplement of 127° (in degrees)?
  13. 13.What is the supplement of 165° (in degrees)?
  14. 14.What is the complement of 41° (in degrees)?
  15. 15.Are 14° and 76° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  16. 16.What is the complement of 81° (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One angle is 120°. What is its corresponding angle (in degrees)?
  18. 18.Two angles are supplementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two angles are supplementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  20. 20.Are 40° and 50° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  21. 21.Two angles are supplementary. One is 106° more than the other. What is the bigger angle (in degrees)?
  22. 22.Two angles are supplementary. One is 90° more than the other. What is the bigger angle (in degrees)?
  23. 23.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)?
  24. 24.What is the complement of 51° (in degrees)?
  25. 25.What is the complement of 83° (in degrees)?
  26. 26.What is the complement of 11° (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 74°. What is its other interior angle on the same side of the transversal (in degrees)?
  28. 28.What is the complement of 57° (in degrees)?
  29. 29.What is the supplement of 149° (in degrees)?
  30. 30.What is the complement of 17° (in degrees)?
  31. 31.Are 14° and 29° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  32. 32.Are 77° and 13° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  33. 33.Two parallel lines are cut by a transversal. One angle is 111°. What is its corresponding angle (in degrees)?
  34. 34.What is the complement of 35° (in degrees)?
  35. 35.Are 48° and 96° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  36. 36.Two parallel lines are cut by a transversal. One angle is 39°. What is its corresponding angle (in degrees)?
  37. 37.Two angles are supplementary. One is 140° more than the other. What is the bigger angle (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 86°. What is its other interior angle on the same side of the transversal (in degrees)?
  39. 39.What is the supplement of 108° (in degrees)?
  40. 40.What is the supplement of 145° (in degrees)?

Answer key

  1. 61
  2. 85
  3. 165
  4. Complementary
  5. 114
  6. 88
  7. 21
  8. 142
  9. Neither
  10. Neither
  11. Complementary
  12. 53
  13. 15
  14. 49
  15. Complementary
  16. 9
  17. 120
  18. 121
  19. 101
  20. Complementary
  21. 143
  22. 135
  23. 26
  24. 39
  25. 7
  26. 79
  27. 106
  28. 33
  29. 31
  30. 73
  31. Neither
  32. Complementary
  33. 111
  34. 55
  35. Neither
  36. 39
  37. 160
  38. 94
  39. 72
  40. 35

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