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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 441 · 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 60° and 30° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  2. 2.What is the supplement of 170° (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 93°. What is the angle vertically opposite to it (in degrees)?
  4. 4.Are 39° and 51° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  5. 5.Are 58° and 122° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  6. 6.What is the supplement of 134° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 52°. What is the angle next to it on the same line (in degrees)?
  8. 8.What is the supplement of 14° (in degrees)?
  9. 9.What is the complement of 40° (in degrees)?
  10. 10.What is the complement of 12° (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 100°. What is the angle next to it on the same line (in degrees)?
  12. 12.What is the complement of 30° (in degrees)?
  13. 13.Are 13° and 167° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  14. 14.What is the complement of 69° (in degrees)?
  15. 15.What is the complement of 25° (in degrees)?
  16. 16.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  17. 17.What is the complement of 68° (in degrees)?
  18. 18.Two angles are supplementary. One is 124° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One angle is 34°. What is its corresponding angle (in degrees)?
  20. 20.What is the complement of 15° (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 54°. What is the angle vertically opposite to it (in degrees)?
  22. 22.What is the supplement of 58° (in degrees)?
  23. 23.What is the supplement of 121° (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 125°. What is the angle next to it on the same line (in degrees)?
  25. 25.Are 24° and 156° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  26. 26.Are 55° and 61° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  27. 27.Two straight lines cross each other. One of the angles formed is 34°. What is the angle next to it on the same line (in degrees)?
  28. 28.Are 64° and 116° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  29. 29.What is the supplement of 147° (in degrees)?
  30. 30.What is the complement of 33° (in degrees)?
  31. 31.Are 26° and 66° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  32. 32.Two straight lines cross each other. One of the angles formed is 132°. What is the angle vertically opposite to it (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 71°. What is its other interior angle on the same side of the transversal (in degrees)?
  34. 34.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the supplement of 76° (in degrees)?
  36. 36.What is the complement of 72° (in degrees)?
  37. 37.What is the complement of 46° (in degrees)?
  38. 38.What is the complement of 62° (in degrees)?
  39. 39.What is the complement of 57° (in degrees)?
  40. 40.Are 73° and 91° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither

Answer key

  1. Complementary
  2. 10
  3. 93
  4. Complementary
  5. Supplementary
  6. 46
  7. 128
  8. 166
  9. 50
  10. 78
  11. 80
  12. 60
  13. Supplementary
  14. 21
  15. 65
  16. 55
  17. 22
  18. 152
  19. 34
  20. 75
  21. 54
  22. 122
  23. 59
  24. 55
  25. Supplementary
  26. Neither
  27. 146
  28. Supplementary
  29. 33
  30. 57
  31. Neither
  32. 132
  33. 109
  34. 60
  35. 104
  36. 18
  37. 44
  38. 28
  39. 33
  40. Neither

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