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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 851 · 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 39° (in degrees)?
  2. 2.Are 23° and 67° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  3. 3.What is the supplement of 117° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 139°. What is its alternate interior angle (in degrees)?
  5. 5.What is the complement of 57° (in degrees)?
  6. 6.What is the complement of 42° (in degrees)?
  7. 7.What is the supplement of 77° (in degrees)?
  8. 8.Are 13° and 167° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  9. 9.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 32°. What is the angle vertically opposite to it (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 87°. What is its other interior angle on the same side of the transversal (in degrees)?
  12. 12.What is the supplement of 146° (in degrees)?
  13. 13.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)?
  14. 14.What is the complement of 12° (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 139°. What is the angle vertically opposite to it (in degrees)?
  16. 16.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One angle is 72°. What is its corresponding angle (in degrees)?
  18. 18.What is the complement of 14° (in degrees)?
  19. 19.Two angles are supplementary. One is 98° more than the other. What is the bigger angle (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One angle is 38°. What is its corresponding angle (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 26°. What is the angle vertically opposite to it (in degrees)?
  22. 22.What is the complement of 47° (in degrees)?
  23. 23.What is the supplement of 109° (in degrees)?
  24. 24.What is the complement of 18° (in degrees)?
  25. 25.Two angles are supplementary. One is 90° more than the other. What is the bigger angle (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 47°. What is the angle vertically opposite to it (in degrees)?
  27. 27.Two angles are supplementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  28. 28.What is the supplement of 101° (in degrees)?
  29. 29.Are 60° and 131° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  30. 30.Two straight lines cross each other. One of the angles formed is 55°. What is the angle vertically opposite to it (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One angle is 87°. What is its corresponding angle (in degrees)?
  32. 32.Are 11° and 79° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  33. 33.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 53°. What is the angle vertically opposite to it (in degrees)?
  35. 35.What is the complement of 29° (in degrees)?
  36. 36.What is the supplement of 122° (in degrees)?
  37. 37.Two angles are supplementary. One is 78° 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 132°. What is its alternate interior angle (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One angle is 66°. What is its corresponding angle (in degrees)?
  40. 40.What is the supplement of 115° (in degrees)?

Answer key

  1. 51
  2. Complementary
  3. 63
  4. 139
  5. 33
  6. 48
  7. 103
  8. Supplementary
  9. 70
  10. 32
  11. 93
  12. 34
  13. 141
  14. 78
  15. 139
  16. 46
  17. 72
  18. 76
  19. 139
  20. 38
  21. 26
  22. 43
  23. 71
  24. 72
  25. 135
  26. 47
  27. 117
  28. 79
  29. Neither
  30. 55
  31. 87
  32. Complementary
  33. 72
  34. 53
  35. 61
  36. 58
  37. 129
  38. 132
  39. 66
  40. 65

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