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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 334 · 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 straight lines cross each other. One of the angles formed is 121°. What is the angle vertically opposite to it (in degrees)?
  2. 2.What is the supplement of 160° (in degrees)?
  3. 3.Are 70° and 20° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  4. 4.Two parallel lines are cut by a transversal. One angle is 54°. What is its corresponding angle (in degrees)?
  5. 5.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One angle is 62°. What is its corresponding angle (in degrees)?
  7. 7.What is the complement of 9° (in degrees)?
  8. 8.What is the supplement of 97° (in degrees)?
  9. 9.Two angles are supplementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  10. 10.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  11. 11.Are 19° and 161° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  12. 12.What is the complement of 13° (in degrees)?
  13. 13.Two angles are supplementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  14. 14.What is the supplement of 111° (in degrees)?
  15. 15.Are 17° and 73° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  16. 16.Two angles are supplementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 137°. What is the angle vertically opposite to it (in degrees)?
  18. 18.What is the supplement of 125° (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 46°. What is the angle next to it on the same line (in degrees)?
  20. 20.What is the supplement of 132° (in degrees)?
  21. 21.What is the supplement of 58° (in degrees)?
  22. 22.What is the supplement of 123° (in degrees)?
  23. 23.What is the complement of 16° (in degrees)?
  24. 24.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  25. 25.What is the supplement of 161° (in degrees)?
  26. 26.What is the complement of 7° (in degrees)?
  27. 27.Are 19° and 99° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  28. 28.Two straight lines cross each other. One of the angles formed is 58°. What is the angle next to it on the same line (in degrees)?
  29. 29.What is the supplement of 13° (in degrees)?
  30. 30.What is the supplement of 66° (in degrees)?
  31. 31.What is the complement of 72° (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 147°. What is the angle vertically opposite to it (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One angle is 147°. What is its corresponding angle (in degrees)?
  34. 34.Two angles are supplementary. One is 132° more than the other. What is the bigger angle (in degrees)?
  35. 35.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One interior angle is 41°. What is its other interior angle on the same side of the transversal (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One interior angle is 33°. What is its other interior angle on the same side of the transversal (in degrees)?
  38. 38.What is the complement of 84° (in degrees)?
  39. 39.Two angles are supplementary. One is 82° more than the other. What is the bigger angle (in degrees)?
  40. 40.What is the complement of 27° (in degrees)?

Answer key

  1. 121
  2. 20
  3. Complementary
  4. 54
  5. 58
  6. 62
  7. 81
  8. 83
  9. 114
  10. 70
  11. Supplementary
  12. 77
  13. 119
  14. 69
  15. Complementary
  16. 118
  17. 137
  18. 55
  19. 134
  20. 48
  21. 122
  22. 57
  23. 74
  24. 52
  25. 19
  26. 83
  27. Neither
  28. 122
  29. 167
  30. 114
  31. 18
  32. 147
  33. 147
  34. 156
  35. 72
  36. 139
  37. 147
  38. 6
  39. 131
  40. 63

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