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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 763 · 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.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  2. 2.What is the supplement of 24° (in degrees)?
  3. 3.Two angles are supplementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  4. 4.Are 38° and 142° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  5. 5.Two straight lines cross each other. One of the angles formed is 25°. What is the angle next to it on the same line (in degrees)?
  6. 6.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  7. 7.What is the supplement of 50° (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 120°. What is the angle next to it on the same line (in degrees)?
  9. 9.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  10. 10.What is the supplement of 113° (in degrees)?
  11. 11.What is the supplement of 115° (in degrees)?
  12. 12.Are 52° and 38° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  13. 13.Are 57° and 123° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  14. 14.What is the complement of 35° (in degrees)?
  15. 15.What is the supplement of 109° (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 111°. What is the angle next to it on the same line (in degrees)?
  17. 17.What is the complement of 54° (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 75°. What is its alternate interior angle (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 148°. What is the angle next to it on the same line (in degrees)?
  20. 20.What is the complement of 25° (in degrees)?
  21. 21.What is the supplement of 54° (in degrees)?
  22. 22.Two angles are supplementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the complement of 49° (in degrees)?
  24. 24.Two angles are supplementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two angles are supplementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  26. 26.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  27. 27.What is the complement of 21° (in degrees)?
  28. 28.What is the complement of 53° (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One angle is 105°. What is its corresponding angle (in degrees)?
  30. 30.Are 58° and 32° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  31. 31.Two angles are supplementary. One is 88° more than the other. What is the bigger angle (in degrees)?
  32. 32.What is the supplement of 16° (in degrees)?
  33. 33.What is the complement of 81° (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 58°. What is the angle next to it on the same line (in degrees)?
  35. 35.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  37. 37.What is the complement of 44° (in degrees)?
  38. 38.What is the complement of 62° (in degrees)?
  39. 39.Are 65° and 25° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  40. 40.Two straight lines cross each other. One of the angles formed is 87°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 58
  2. 156
  3. 123
  4. Supplementary
  5. 155
  6. 70
  7. 130
  8. 60
  9. 67
  10. 67
  11. 65
  12. Complementary
  13. Supplementary
  14. 55
  15. 71
  16. 69
  17. 36
  18. 75
  19. 32
  20. 65
  21. 126
  22. 115
  23. 41
  24. 117
  25. 99
  26. 68
  27. 69
  28. 37
  29. 105
  30. Complementary
  31. 134
  32. 164
  33. 9
  34. 122
  35. 79
  36. 63
  37. 46
  38. 28
  39. Complementary
  40. 93

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