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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 584 · 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 8° (in degrees)?
  2. 2.What is the supplement of 102° (in degrees)?
  3. 3.Are 78° and 12° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 55°. What is its other interior angle on the same side of the transversal (in degrees)?
  5. 5.What is the supplement of 72° (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 91°. What is the angle vertically opposite to it (in degrees)?
  7. 7.Are 24° and 129° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  8. 8.Two parallel lines are cut by a transversal. One angle is 39°. What is its corresponding angle (in degrees)?
  9. 9.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  10. 10.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  11. 11.Are 48° and 28° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  12. 12.Two parallel lines are cut by a transversal. One angle is 47°. What is its corresponding angle (in degrees)?
  13. 13.What is the supplement of 43° (in degrees)?
  14. 14.What is the supplement of 74° (in degrees)?
  15. 15.What is the supplement of 105° (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 31°. What is its alternate interior angle (in degrees)?
  17. 17.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)?
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 66°. What is its alternate interior angle (in degrees)?
  19. 19.What is the complement of 17° (in degrees)?
  20. 20.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  21. 21.What is the supplement of 92° (in degrees)?
  22. 22.What is the supplement of 122° (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 supplement of 116° (in degrees)?
  25. 25.Are 51° and 39° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  26. 26.Two straight lines cross each other. One of the angles formed is 143°. What is the angle next to it on the same line (in degrees)?
  27. 27.What is the supplement of 142° (in degrees)?
  28. 28.What is the supplement of 56° (in degrees)?
  29. 29.Are 49° and 131° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  30. 30.What is the supplement of 71° (in degrees)?
  31. 31.What is the complement of 63° (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 89°. What is its other interior angle on the same side of the transversal (in degrees)?
  33. 33.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One angle is 126°. What is its corresponding angle (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 85°. What is the angle vertically opposite to it (in degrees)?
  36. 36.What is the complement of 34° (in degrees)?
  37. 37.What is the complement of 15° (in degrees)?
  38. 38.Two angles are supplementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 55°. What is the angle vertically opposite to it (in degrees)?
  40. 40.Two angles are supplementary. One is 62° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 172
  2. 78
  3. Complementary
  4. 125
  5. 108
  6. 91
  7. Neither
  8. 39
  9. 62
  10. 52
  11. Neither
  12. 47
  13. 137
  14. 106
  15. 75
  16. 31
  17. 26
  18. 66
  19. 73
  20. 58
  21. 88
  22. 58
  23. 79
  24. 64
  25. Complementary
  26. 37
  27. 38
  28. 124
  29. Supplementary
  30. 109
  31. 27
  32. 91
  33. 69
  34. 126
  35. 85
  36. 56
  37. 75
  38. 109
  39. 55
  40. 121

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