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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 496 · 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 24° and 156° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  2. 2.Two straight lines cross each other. One of the angles formed is 111°. What is the angle vertically opposite to it (in degrees)?
  3. 3.What is the complement of 23° (in degrees)?
  4. 4.Are 48° and 132° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  5. 5.Two straight lines cross each other. One of the angles formed is 91°. What is the angle next to it on the same line (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One angle is 116°. What is its corresponding angle (in degrees)?
  7. 7.Two angles are complementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  8. 8.Are 50° and 130° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  9. 9.Are 39° and 51° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  10. 10.Two straight lines cross each other. One of the angles formed is 42°. What is the angle next to it on the same line (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 61°. What is the angle next to it on the same line (in degrees)?
  12. 12.Are 58° and 77° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  13. 13.Two straight lines cross each other. One of the angles formed is 20°. What is the angle next to it on the same line (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 50°. What is its corresponding angle (in degrees)?
  15. 15.Two angles are supplementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 160°. What is the angle next to it on the same line (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One interior angle is 58°. What is its alternate interior angle (in degrees)?
  18. 18.Are 57° and 123° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  19. 19.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  20. 20.Are 69° and 21° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  21. 21.Two straight lines cross each other. One of the angles formed is 56°. What is the angle vertically opposite to it (in degrees)?
  22. 22.Are 16° and 81° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  23. 23.Are 17° and 73° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  24. 24.Two angles are supplementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  25. 25.What is the supplement of 100° (in degrees)?
  26. 26.What is the complement of 39° (in degrees)?
  27. 27.What is the complement of 24° (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 39°. What is its alternate interior angle (in degrees)?
  29. 29.What is the complement of 34° (in degrees)?
  30. 30.What is the supplement of 30° (in degrees)?
  31. 31.What is the supplement of 147° (in degrees)?
  32. 32.What is the supplement of 122° (in degrees)?
  33. 33.What is the supplement of 167° (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 148°. What is the angle next to it on the same line (in degrees)?
  35. 35.Two angles are supplementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One interior angle is 149°. What is its other interior angle on the same side of the transversal (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 134°. What is the angle vertically opposite to it (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 146°. What is the angle vertically opposite to it (in degrees)?
  39. 39.Are 18° and 103° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  40. 40.What is the complement of 7° (in degrees)?

Answer key

  1. Supplementary
  2. 111
  3. 67
  4. Supplementary
  5. 89
  6. 116
  7. 47
  8. Supplementary
  9. Complementary
  10. 138
  11. 119
  12. Neither
  13. 160
  14. 50
  15. 104
  16. 20
  17. 58
  18. Supplementary
  19. 62
  20. Complementary
  21. 56
  22. Neither
  23. Complementary
  24. 125
  25. 80
  26. 51
  27. 66
  28. 39
  29. 56
  30. 150
  31. 33
  32. 58
  33. 13
  34. 32
  35. 108
  36. 31
  37. 134
  38. 146
  39. Neither
  40. 83

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