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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 483 · 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.Are 21° and 159° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  2. 2.Are 74° and 164° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  3. 3.Are 40° and 131° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 95°. What is its alternate interior angle (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 62°. What is its other interior angle on the same side of the transversal (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 45°. What is the angle next to it on the same line (in degrees)?
  7. 7.Are 62° and 104° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  8. 8.What is the complement of 75° (in degrees)?
  9. 9.What is the supplement of 103° (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One angle is 130°. What is its corresponding angle (in degrees)?
  11. 11.Are 41° and 49° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  12. 12.Two parallel lines are cut by a transversal. One angle is 143°. What is its corresponding angle (in degrees)?
  13. 13.What is the complement of 9° (in degrees)?
  14. 14.Are 51° and 129° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  15. 15.What is the supplement of 126° (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 38°. What is its other interior angle on the same side of the transversal (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 138°. What is the angle next to it on the same line (in degrees)?
  18. 18.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  19. 19.Are 60° and 30° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  20. 20.Two straight lines cross each other. One of the angles formed is 72°. What is the angle vertically opposite to it (in degrees)?
  21. 21.What is the complement of 42° (in degrees)?
  22. 22.What is the complement of 33° (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 59°. What is its other interior angle on the same side of the transversal (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 27°. What is the angle vertically opposite to it (in degrees)?
  25. 25.What is the complement of 48° (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 37°. What is its other interior angle on the same side of the transversal (in degrees)?
  27. 27.What is the complement of 63° (in degrees)?
  28. 28.What is the complement of 14° (in degrees)?
  29. 29.What is the complement of 11° (in degrees)?
  30. 30.What is the complement of 19° (in degrees)?
  31. 31.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  32. 32.Are 24° and 66° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  33. 33.Two straight lines cross each other. One of the angles formed is 30°. What is the angle vertically opposite to it (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One angle is 92°. What is its corresponding angle (in degrees)?
  35. 35.What is the supplement of 21° (in degrees)?
  36. 36.Are 40° and 50° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  37. 37.What is the supplement of 164° (in degrees)?
  38. 38.What is the supplement of 42° (in degrees)?
  39. 39.What is the supplement of 14° (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One interior angle is 120°. What is its alternate interior angle (in degrees)?

Answer key

  1. Supplementary
  2. Neither
  3. Neither
  4. 95
  5. 118
  6. 135
  7. Neither
  8. 15
  9. 77
  10. 130
  11. Complementary
  12. 143
  13. 81
  14. Supplementary
  15. 54
  16. 142
  17. 42
  18. 73
  19. Complementary
  20. 72
  21. 48
  22. 57
  23. 121
  24. 27
  25. 42
  26. 143
  27. 27
  28. 76
  29. 79
  30. 71
  31. 51
  32. Complementary
  33. 30
  34. 92
  35. 159
  36. Complementary
  37. 16
  38. 138
  39. 166
  40. 120

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