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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 148 · 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 61° and 119° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  2. 2.What is the complement of 28° (in degrees)?
  3. 3.Are 71° and 109° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  4. 4.Two straight lines cross each other. One of the angles formed is 40°. What is the angle vertically opposite to it (in degrees)?
  5. 5.What is the supplement of 23° (in degrees)?
  6. 6.Are 16° and 10° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  7. 7.What is the complement of 68° (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One angle is 109°. What is its corresponding angle (in degrees)?
  9. 9.Are 80° and 167° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  10. 10.Two parallel lines are cut by a transversal. One interior angle is 89°. What is its alternate interior angle (in degrees)?
  11. 11.What is the complement of 35° (in degrees)?
  12. 12.Two angles are supplementary. One is 88° more than the other. What is the bigger angle (in degrees)?
  13. 13.What is the complement of 66° (in degrees)?
  14. 14.What is the supplement of 113° (in degrees)?
  15. 15.Are 60° and 30° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  16. 16.Two parallel lines are cut by a transversal. One angle is 57°. What is its corresponding angle (in degrees)?
  17. 17.Two angles are supplementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One angle is 104°. What is its corresponding angle (in degrees)?
  19. 19.Are 67° and 23° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  20. 20.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)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 145°. What is its other interior angle on the same side of the transversal (in degrees)?
  22. 22.Are 60° and 166° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  23. 23.Are 65° and 48° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  24. 24.Two parallel lines are cut by a transversal. One angle is 97°. What is its corresponding angle (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 42°. What is its alternate interior angle (in degrees)?
  26. 26.What is the complement of 82° (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 146°. What is the angle next to it on the same line (in degrees)?
  28. 28.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  29. 29.What is the supplement of 99° (in degrees)?
  30. 30.What is the complement of 74° (in degrees)?
  31. 31.Are 46° and 134° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  32. 32.Two straight lines cross each other. One of the angles formed is 31°. What is the angle vertically opposite to it (in degrees)?
  33. 33.What is the complement of 19° (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 22°. What is the angle vertically opposite to it (in degrees)?
  35. 35.What is the complement of 32° (in degrees)?
  36. 36.Are 29° and 21° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  37. 37.Two straight lines cross each other. One of the angles formed is 126°. What is the angle vertically opposite to it (in degrees)?
  38. 38.What is the supplement of 104° (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 126°. What is the angle next to it on the same line (in degrees)?
  40. 40.What is the complement of 78° (in degrees)?

Answer key

  1. Supplementary
  2. 62
  3. Supplementary
  4. 40
  5. 157
  6. Neither
  7. 22
  8. 109
  9. Neither
  10. 89
  11. 55
  12. 134
  13. 24
  14. 67
  15. Complementary
  16. 57
  17. 105
  18. 104
  19. Complementary
  20. 47
  21. 35
  22. Neither
  23. Neither
  24. 97
  25. 42
  26. 8
  27. 34
  28. 80
  29. 81
  30. 16
  31. Supplementary
  32. 31
  33. 71
  34. 22
  35. 58
  36. Neither
  37. 126
  38. 76
  39. 54
  40. 12

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