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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 615 · 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.Two straight lines cross each other. One of the angles formed is 111°. What is the angle next to it on the same line (in degrees)?
  2. 2.What is the supplement of 106° (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 39°. What is its corresponding angle (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 84°. What is the angle next to it on the same line (in degrees)?
  5. 5.What is the complement of 83° (in degrees)?
  6. 6.What is the supplement of 16° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 100°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Two angles are supplementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  9. 9.What is the complement of 21° (in degrees)?
  10. 10.What is the complement of 27° (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 29°. What is the angle vertically opposite to it (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 67°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Are 38° and 52° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  14. 14.What is the complement of 35° (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 96°. What is the angle vertically opposite to it (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 41°. What is the angle vertically opposite to it (in degrees)?
  17. 17.What is the supplement of 81° (in degrees)?
  18. 18.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 139°. What is the angle vertically opposite to it (in degrees)?
  21. 21.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  22. 22.Are 28° and 62° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  23. 23.Two parallel lines are cut by a transversal. One angle is 86°. What is its corresponding angle (in degrees)?
  24. 24.Are 34° and 146° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  25. 25.Two parallel lines are cut by a transversal. One angle is 66°. What is its corresponding angle (in degrees)?
  26. 26.Are 23° and 67° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  27. 27.Are 67° and 23° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  28. 28.What is the supplement of 144° (in degrees)?
  29. 29.Two angles are supplementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  30. 30.What is the supplement of 80° (in degrees)?
  31. 31.Are 78° and 102° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  32. 32.What is the complement of 7° (in degrees)?
  33. 33.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)?
  34. 34.What is the supplement of 11° (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 121°. What is the angle vertically opposite to it (in degrees)?
  36. 36.What is the supplement of 17° (in degrees)?
  37. 37.What is the complement of 6° (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One angle is 44°. What is its corresponding angle (in degrees)?
  39. 39.What is the supplement of 147° (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One interior angle is 80°. What is its other interior angle on the same side of the transversal (in degrees)?

Answer key

  1. 69
  2. 74
  3. 39
  4. 96
  5. 7
  6. 164
  7. 100
  8. 121
  9. 69
  10. 63
  11. 29
  12. 67
  13. Complementary
  14. 55
  15. 96
  16. 41
  17. 99
  18. 78
  19. 70
  20. 139
  21. 52
  22. Complementary
  23. 86
  24. Supplementary
  25. 66
  26. Complementary
  27. Complementary
  28. 36
  29. 99
  30. 100
  31. Supplementary
  32. 83
  33. 47
  34. 169
  35. 121
  36. 163
  37. 84
  38. 44
  39. 33
  40. 100

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