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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 371 · 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 135° (in degrees)?
  2. 2.Are 67° and 152° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  3. 3.Are 44° and 135° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  4. 4.What is the complement of 17° (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 141°. What is its alternate interior angle (in degrees)?
  6. 6.Are 21° and 69° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  7. 7.What is the complement of 49° (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 154°. What is the angle next to it on the same line (in degrees)?
  9. 9.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  10. 10.What is the supplement of 119° (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 67°. What is its alternate interior angle (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 74°. What is the angle next to it on the same line (in degrees)?
  13. 13.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  14. 14.What is the complement of 36° (in degrees)?
  15. 15.What is the supplement of 13° (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 62°. What is the angle next to it on the same line (in degrees)?
  17. 17.Are 43° and 137° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  18. 18.Two parallel lines are cut by a transversal. One angle is 100°. What is its corresponding angle (in degrees)?
  19. 19.What is the supplement of 76° (in degrees)?
  20. 20.What is the supplement of 170° (in degrees)?
  21. 21.What is the complement of 35° (in degrees)?
  22. 22.What is the complement of 37° (in degrees)?
  23. 23.Two angles are supplementary. One is 140° more than the other. What is the bigger angle (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 29°. What is the angle next to it on the same line (in degrees)?
  25. 25.What is the complement of 6° (in degrees)?
  26. 26.What is the complement of 45° (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 41°. What is the angle vertically opposite to it (in degrees)?
  28. 28.Two angles are supplementary. One is 86° more than the other. What is the bigger angle (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 24°. What is the angle next to it on the same line (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 74°. What is the angle vertically opposite to it (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One angle is 90°. What is its corresponding angle (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 87°. What is its alternate interior angle (in degrees)?
  33. 33.Are 51° and 39° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  34. 34.Two parallel lines are cut by a transversal. One angle is 64°. What is its corresponding angle (in degrees)?
  35. 35.Are 11° and 79° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  36. 36.Two straight lines cross each other. One of the angles formed is 27°. What is the angle vertically opposite to it (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 24°. What is the angle vertically opposite to it (in degrees)?
  38. 38.Are 14° and 166° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  39. 39.Are 80° and 100° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  40. 40.What is the complement of 68° (in degrees)?

Answer key

  1. 45
  2. Neither
  3. Neither
  4. 73
  5. 141
  6. Complementary
  7. 41
  8. 26
  9. 70
  10. 61
  11. 67
  12. 106
  13. 61
  14. 54
  15. 167
  16. 118
  17. Supplementary
  18. 100
  19. 104
  20. 10
  21. 55
  22. 53
  23. 160
  24. 151
  25. 84
  26. 45
  27. 41
  28. 133
  29. 156
  30. 74
  31. 90
  32. 87
  33. Complementary
  34. 64
  35. Complementary
  36. 27
  37. 24
  38. Supplementary
  39. Supplementary
  40. 22

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