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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 538 · 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 89° (in degrees)?
  2. 2.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)?
  3. 3.What is the complement of 48° (in degrees)?
  4. 4.What is the complement of 81° (in degrees)?
  5. 5.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 65°. What is its alternate interior angle (in degrees)?
  7. 7.What is the complement of 57° (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 132°. What is its alternate interior angle (in degrees)?
  9. 9.What is the complement of 64° (in degrees)?
  10. 10.Two angles are supplementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 88°. What is the angle next to it on the same line (in degrees)?
  12. 12.What is the supplement of 67° (in degrees)?
  13. 13.What is the complement of 23° (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 133°. What is its other interior angle on the same side of the transversal (in degrees)?
  15. 15.Two angles are complementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  16. 16.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)?
  17. 17.Are 77° and 13° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  18. 18.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 68°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 129°. What is its other interior angle on the same side of the transversal (in degrees)?
  21. 21.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One interior angle is 31°. What is its alternate interior angle (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 147°. What is its alternate interior angle (in degrees)?
  24. 24.Two angles are supplementary. One is 128° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One angle is 70°. What is its corresponding angle (in degrees)?
  26. 26.What is the complement of 50° (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 42°. What is the angle next to it on the same line (in degrees)?
  28. 28.What is the supplement of 141° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 87°. What is the angle vertically opposite to it (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 26°. What is the angle next to it on the same line (in degrees)?
  31. 31.What is the complement of 78° (in degrees)?
  32. 32.What is the complement of 29° (in degrees)?
  33. 33.What is the complement of 75° (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 117°. What is the angle next to it on the same line (in degrees)?
  35. 35.What is the supplement of 57° (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 57°. What is the angle next to it on the same line (in degrees)?
  37. 37.Are 62° and 28° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  38. 38.Are 21° and 68° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  39. 39.Are 22° and 158° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  40. 40.Two angles are supplementary. One is 118° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 91
  2. 134
  3. 42
  4. 9
  5. 79
  6. 65
  7. 33
  8. 132
  9. 26
  10. 120
  11. 92
  12. 113
  13. 67
  14. 47
  15. 47
  16. 152
  17. Complementary
  18. 60
  19. 68
  20. 51
  21. 78
  22. 31
  23. 147
  24. 154
  25. 70
  26. 40
  27. 138
  28. 39
  29. 87
  30. 154
  31. 12
  32. 61
  33. 15
  34. 63
  35. 123
  36. 123
  37. Complementary
  38. Neither
  39. Supplementary
  40. 149

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