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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 916 · 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 supplement of 86° (in degrees)?
  2. 2.What is the complement of 11° (in degrees)?
  3. 3.What is the supplement of 162° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 88°. What is its other interior angle on the same side of the transversal (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 60°. What is its other interior angle on the same side of the transversal (in degrees)?
  6. 6.What is the complement of 42° (in degrees)?
  7. 7.Two angles are supplementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  8. 8.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  9. 9.Are 23° and 67° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  10. 10.What is the supplement of 125° (in degrees)?
  11. 11.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 28°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Are 79° and 101° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  14. 14.What is the supplement of 22° (in degrees)?
  15. 15.What is the complement of 28° (in degrees)?
  16. 16.What is the complement of 61° (in degrees)?
  17. 17.Two angles are supplementary. One is 132° more than the other. What is the bigger angle (in degrees)?
  18. 18.Two angles are supplementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 130°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 100°. What is its other interior angle on the same side of the transversal (in degrees)?
  21. 21.Two angles are supplementary. One is 130° more than the other. What is the bigger angle (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 67°. What is the angle vertically opposite to it (in degrees)?
  23. 23.What is the complement of 76° (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 56°. What is its other interior angle on the same side of the transversal (in degrees)?
  25. 25.Are 17° and 163° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 35°. What is its alternate interior angle (in degrees)?
  27. 27.Two angles are supplementary. One is 86° more than the other. What is the bigger angle (in degrees)?
  28. 28.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  29. 29.Are 30° and 60° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  30. 30.What is the supplement of 157° (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 60°. What is its alternate interior angle (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 69°. What is the angle vertically opposite to it (in degrees)?
  33. 33.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  34. 34.What is the complement of 21° (in degrees)?
  35. 35.Two parallel lines are cut by a transversal. One angle is 56°. What is its corresponding angle (in degrees)?
  36. 36.What is the supplement of 108° (in degrees)?
  37. 37.What is the complement of 43° (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 132°. What is the angle next to it on the same line (in degrees)?
  39. 39.What is the supplement of 50° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 33°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 94
  2. 79
  3. 18
  4. 92
  5. 120
  6. 48
  7. 104
  8. 50
  9. Complementary
  10. 55
  11. 76
  12. 28
  13. Supplementary
  14. 158
  15. 62
  16. 29
  17. 156
  18. 114
  19. 130
  20. 80
  21. 155
  22. 67
  23. 14
  24. 124
  25. Supplementary
  26. 35
  27. 133
  28. 80
  29. Complementary
  30. 23
  31. 60
  32. 69
  33. 51
  34. 69
  35. 56
  36. 72
  37. 47
  38. 48
  39. 130
  40. 33

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