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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 320 · 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 48° and 155° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  2. 2.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  3. 3.What is the complement of 79° (in degrees)?
  4. 4.Are 61° and 112° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  5. 5.What is the complement of 18° (in degrees)?
  6. 6.What is the supplement of 60° (in degrees)?
  7. 7.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  8. 8.Are 80° and 10° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  9. 9.What is the supplement of 31° (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 60°. What is the angle vertically opposite to it (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 59°. What is its other interior angle on the same side of the transversal (in degrees)?
  12. 12.What is the supplement of 98° (in degrees)?
  13. 13.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)?
  14. 14.What is the supplement of 164° (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One angle is 148°. What is its corresponding angle (in degrees)?
  16. 16.What is the complement of 15° (in degrees)?
  17. 17.What is the supplement of 41° (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 127°. What is the angle next to it on the same line (in degrees)?
  19. 19.Two angles are supplementary. One is 118° more than the other. What is the bigger angle (in degrees)?
  20. 20.What is the supplement of 154° (in degrees)?
  21. 21.What is the supplement of 175° (in degrees)?
  22. 22.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the supplement of 11° (in degrees)?
  24. 24.Two angles are supplementary. One is 138° more than the other. What is the bigger angle (in degrees)?
  25. 25.What is the supplement of 46° (in degrees)?
  26. 26.What is the supplement of 37° (in degrees)?
  27. 27.What is the complement of 43° (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 93°. What is its other interior angle on the same side of the transversal (in degrees)?
  29. 29.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)?
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 55°. What is its other interior angle on the same side of the transversal (in degrees)?
  31. 31.Are 58° and 79° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  32. 32.What is the supplement of 140° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 90°. What is the angle vertically opposite to it (in degrees)?
  34. 34.Are 20° and 70° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  35. 35.What is the complement of 13° (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 39°. What is the angle vertically opposite to it (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One interior angle is 75°. What is its alternate interior angle (in degrees)?
  38. 38.What is the complement of 62° (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 67°. What is the angle vertically opposite to it (in degrees)?
  40. 40.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. Neither
  2. 70
  3. 11
  4. Neither
  5. 72
  6. 120
  7. 46
  8. Complementary
  9. 149
  10. 60
  11. 121
  12. 82
  13. 128
  14. 16
  15. 148
  16. 75
  17. 139
  18. 53
  19. 149
  20. 26
  21. 5
  22. 76
  23. 169
  24. 159
  25. 134
  26. 143
  27. 47
  28. 87
  29. 139
  30. 125
  31. Neither
  32. 40
  33. 90
  34. Complementary
  35. 77
  36. 39
  37. 75
  38. 28
  39. 67
  40. 60

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