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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 146 · 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.Are 40° and 50° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  2. 2.What is the supplement of 112° (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 107°. What is its corresponding angle (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 51°. What is the angle vertically opposite to it (in degrees)?
  5. 5.Are 70° and 110° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  6. 6.Two angles are complementary. One is 8° 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 70°. What is the angle next to it on the same line (in degrees)?
  8. 8.What is the complement of 31° (in degrees)?
  9. 9.Two angles are supplementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  10. 10.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 134°. What is the angle next to it on the same line (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 39°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.Two angles are supplementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two angles are supplementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  15. 15.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  16. 16.Are 46° and 109° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  17. 17.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 99°. What is the angle next to it on the same line (in degrees)?
  19. 19.What is the supplement of 24° (in degrees)?
  20. 20.What is the supplement of 131° (in degrees)?
  21. 21.Are 49° and 131° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  22. 22.Two straight lines cross each other. One of the angles formed is 28°. What is the angle vertically opposite to it (in degrees)?
  23. 23.Are 32° and 58° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  24. 24.Two angles are supplementary. One is 106° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 134°. What is the angle vertically opposite to it (in degrees)?
  26. 26.What is the complement of 43° (in degrees)?
  27. 27.What is the complement of 32° (in degrees)?
  28. 28.What is the supplement of 70° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 102°. What is the angle next to it on the same line (in degrees)?
  30. 30.What is the complement of 35° (in degrees)?
  31. 31.What is the complement of 14° (in degrees)?
  32. 32.Are 51° and 115° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  33. 33.Two angles are supplementary. One is 116° more than the other. What is the bigger angle (in degrees)?
  34. 34.What is the complement of 53° (in degrees)?
  35. 35.What is the supplement of 48° (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 94°. What is the angle vertically opposite to it (in degrees)?
  37. 37.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 33°. What is the angle vertically opposite to it (in degrees)?
  39. 39.What is the supplement of 147° (in degrees)?
  40. 40.What is the complement of 79° (in degrees)?

Answer key

  1. Complementary
  2. 68
  3. 107
  4. 51
  5. Supplementary
  6. 49
  7. 110
  8. 59
  9. 105
  10. 51
  11. 46
  12. 141
  13. 121
  14. 104
  15. 73
  16. Neither
  17. 57
  18. 81
  19. 156
  20. 49
  21. Supplementary
  22. 28
  23. Complementary
  24. 143
  25. 134
  26. 47
  27. 58
  28. 110
  29. 78
  30. 55
  31. 76
  32. Neither
  33. 148
  34. 37
  35. 132
  36. 94
  37. 79
  38. 33
  39. 33
  40. 11

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