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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 686 · 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 117° (in degrees)?
  2. 2.What is the supplement of 36° (in degrees)?
  3. 3.What is the supplement of 155° (in degrees)?
  4. 4.Are 10° and 170° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  5. 5.Are 49° and 41° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  6. 6.What is the supplement of 128° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 27°. What is the angle next to it on the same line (in degrees)?
  8. 8.What is the complement of 14° (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 72°. What is the angle vertically opposite to it (in degrees)?
  10. 10.What is the complement of 83° (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 46°. What is the angle next to it on the same line (in degrees)?
  12. 12.Are 17° and 41° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  13. 13.What is the complement of 29° (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 147°. What is the angle vertically opposite to it (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 115°. What is the angle next to it on the same line (in degrees)?
  16. 16.Two angles are supplementary. One is 114° more than the other. What is the bigger angle (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One interior angle is 58°. What is its other interior angle on the same side of the transversal (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 140°. What is the angle vertically opposite to it (in degrees)?
  19. 19.Two angles are supplementary. One is 90° more than the other. What is the bigger angle (in degrees)?
  20. 20.Are 41° and 139° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  21. 21.What is the complement of 80° (in degrees)?
  22. 22.Are 28° and 62° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  23. 23.What is the complement of 19° (in degrees)?
  24. 24.What is the supplement of 30° (in degrees)?
  25. 25.Are 46° and 62° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  26. 26.Are 78° and 12° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  27. 27.Two straight lines cross each other. One of the angles formed is 28°. What is the angle next to it on the same line (in degrees)?
  28. 28.Two angles are supplementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  29. 29.Two angles are supplementary. One is 102° more than the other. What is the bigger angle (in degrees)?
  30. 30.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  31. 31.What is the supplement of 107° (in degrees)?
  32. 32.Are 17° and 73° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  33. 33.What is the complement of 70° (in degrees)?
  34. 34.What is the supplement of 142° (in degrees)?
  35. 35.Two parallel lines are cut by a transversal. One angle is 32°. What is its corresponding angle (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 21°. What is the angle vertically opposite to it (in degrees)?
  37. 37.Two angles are complementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  38. 38.What is the supplement of 31° (in degrees)?
  39. 39.Are 65° and 25° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  40. 40.Two parallel lines are cut by a transversal. One angle is 40°. What is its corresponding angle (in degrees)?

Answer key

  1. 63
  2. 144
  3. 25
  4. Supplementary
  5. Complementary
  6. 52
  7. 153
  8. 76
  9. 72
  10. 7
  11. 134
  12. Neither
  13. 61
  14. 147
  15. 65
  16. 147
  17. 122
  18. 140
  19. 135
  20. Supplementary
  21. 10
  22. Complementary
  23. 71
  24. 150
  25. Neither
  26. Complementary
  27. 152
  28. 108
  29. 141
  30. 56
  31. 73
  32. Complementary
  33. 20
  34. 38
  35. 32
  36. 21
  37. 77
  38. 149
  39. Complementary
  40. 40

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