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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 850 · 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 62° (in degrees)?
  2. 2.What is the complement of 9° (in degrees)?
  3. 3.What is the complement of 19° (in degrees)?
  4. 4.Are 26° and 64° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  5. 5.What is the complement of 32° (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 66°. What is the angle next to it on the same line (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One interior angle is 65°. What is its alternate interior angle (in degrees)?
  8. 8.What is the supplement of 15° (in degrees)?
  9. 9.What is the supplement of 120° (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One interior angle is 34°. What is its alternate interior angle (in degrees)?
  11. 11.What is the complement of 26° (in degrees)?
  12. 12.What is the complement of 35° (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One angle is 149°. What is its corresponding angle (in degrees)?
  14. 14.Two angles are supplementary. One is 140° more than the other. What is the bigger angle (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 141°. What is the angle vertically opposite to it (in degrees)?
  16. 16.What is the supplement of 152° (in degrees)?
  17. 17.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  18. 18.What is the supplement of 162° (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 50°. What is its other interior angle on the same side of the transversal (in degrees)?
  20. 20.What is the supplement of 140° (in degrees)?
  21. 21.Two angles are supplementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  22. 22.What is the complement of 14° (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 79°. What is the angle vertically opposite to it (in degrees)?
  24. 24.What is the complement of 28° (in degrees)?
  25. 25.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  26. 26.What is the supplement of 51° (in degrees)?
  27. 27.Are 76° and 104° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 140°. What is its alternate interior angle (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One angle is 103°. What is its corresponding angle (in degrees)?
  30. 30.Are 42° and 48° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  31. 31.Are 51° and 129° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  32. 32.What is the supplement of 59° (in degrees)?
  33. 33.What is the supplement of 26° (in degrees)?
  34. 34.Are 28° and 77° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  35. 35.Two parallel lines are cut by a transversal. One angle is 127°. What is its corresponding angle (in degrees)?
  36. 36.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)?
  37. 37.Two straight lines cross each other. One of the angles formed is 106°. What is the angle next to it on the same line (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 41°. What is the angle next to it on the same line (in degrees)?
  39. 39.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two angles are supplementary. One is 66° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 28
  2. 81
  3. 71
  4. Complementary
  5. 58
  6. 114
  7. 65
  8. 165
  9. 60
  10. 34
  11. 64
  12. 55
  13. 149
  14. 160
  15. 141
  16. 28
  17. 70
  18. 18
  19. 130
  20. 40
  21. 95
  22. 76
  23. 79
  24. 62
  25. 60
  26. 129
  27. Supplementary
  28. 140
  29. 103
  30. Complementary
  31. Supplementary
  32. 121
  33. 154
  34. Neither
  35. 127
  36. 146
  37. 74
  38. 139
  39. 50
  40. 123

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