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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 182 · 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 103° (in degrees)?
  2. 2.Are 51° and 63° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  3. 3.Are 53° and 127° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  4. 4.What is the supplement of 122° (in degrees)?
  5. 5.What is the supplement of 134° (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 139°. What is the angle vertically opposite to it (in degrees)?
  7. 7.What is the complement of 32° (in degrees)?
  8. 8.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)?
  9. 9.Are 16° and 73° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  10. 10.What is the supplement of 166° (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 43°. What is the angle next to it on the same line (in degrees)?
  12. 12.Are 20° and 70° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  13. 13.What is the complement of 35° (in degrees)?
  14. 14.What is the supplement of 63° (in degrees)?
  15. 15.Two angles are supplementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  16. 16.Two angles are supplementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  17. 17.What is the complement of 15° (in degrees)?
  18. 18.Two angles are supplementary. One is 56° 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 144°. What is the angle next to it on the same line (in degrees)?
  20. 20.What is the supplement of 69° (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 103°. What is the angle vertically opposite to it (in degrees)?
  22. 22.What is the complement of 64° (in degrees)?
  23. 23.What is the supplement of 62° (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 40°. What is the angle vertically opposite to it (in degrees)?
  25. 25.Are 51° and 39° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  26. 26.What is the complement of 12° (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One angle is 139°. What is its corresponding angle (in degrees)?
  28. 28.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)?
  29. 29.What is the complement of 54° (in degrees)?
  30. 30.Are 60° and 30° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  31. 31.Two straight lines cross each other. One of the angles formed is 34°. What is the angle vertically opposite to it (in degrees)?
  32. 32.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  33. 33.Are 10° and 170° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  34. 34.Two straight lines cross each other. One of the angles formed is 64°. What is the angle vertically opposite to it (in degrees)?
  35. 35.Two parallel lines are cut by a transversal. One interior angle is 37°. What is its alternate interior angle (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 116°. What is the angle next to it on the same line (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 113°. What is the angle next to it on the same line (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 101°. What is the angle next to it on the same line (in degrees)?
  39. 39.Are 80° and 50° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  40. 40.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 77
  2. Neither
  3. Supplementary
  4. 58
  5. 46
  6. 139
  7. 58
  8. 122
  9. Neither
  10. 14
  11. 137
  12. Complementary
  13. 55
  14. 117
  15. 108
  16. 96
  17. 75
  18. 118
  19. 36
  20. 111
  21. 103
  22. 26
  23. 118
  24. 40
  25. Complementary
  26. 78
  27. 139
  28. 63
  29. 36
  30. Complementary
  31. 34
  32. 68
  33. Supplementary
  34. 64
  35. 37
  36. 64
  37. 67
  38. 79
  39. Neither
  40. 98

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