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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 204 · 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 angles are supplementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One angle is 65°. What is its corresponding angle (in degrees)?
  3. 3.What is the complement of 64° (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 151°. What is the angle next to it on the same line (in degrees)?
  5. 5.What is the supplement of 22° (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 108°. What is the angle next to it on the same line (in degrees)?
  7. 7.What is the complement of 38° (in degrees)?
  8. 8.Two angles are supplementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  9. 9.Are 26° and 154° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  10. 10.What is the complement of 28° (in degrees)?
  11. 11.What is the complement of 74° (in degrees)?
  12. 12.Two angles are supplementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  13. 13.What is the supplement of 106° (in degrees)?
  14. 14.What is the supplement of 118° (in degrees)?
  15. 15.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  16. 16.What is the complement of 77° (in degrees)?
  17. 17.Are 15° and 75° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  18. 18.What is the supplement of 168° (in degrees)?
  19. 19.Are 21° and 159° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  20. 20.Two angles are supplementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 52°. What is the angle next to it on the same line (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One interior angle is 136°. What is its alternate interior angle (in degrees)?
  23. 23.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  24. 24.Are 47° and 43° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  25. 25.What is the complement of 11° (in degrees)?
  26. 26.What is the complement of 8° (in degrees)?
  27. 27.What is the complement of 69° (in degrees)?
  28. 28.What is the complement of 48° (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One angle is 52°. What is its corresponding angle (in degrees)?
  30. 30.Two angles are supplementary. One is 130° more than the other. What is the bigger angle (in degrees)?
  31. 31.Are 69° and 111° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  32. 32.What is the complement of 83° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 95°. What is the angle vertically opposite to it (in degrees)?
  34. 34.What is the complement of 71° (in degrees)?
  35. 35.Two angles are complementary. One is 40° 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 150°. What is its alternate interior angle (in degrees)?
  37. 37.What is the complement of 46° (in degrees)?
  38. 38.What is the complement of 82° (in degrees)?
  39. 39.Two angles are supplementary. One is 116° more than the other. What is the bigger angle (in degrees)?
  40. 40.What is the supplement of 53° (in degrees)?

Answer key

  1. 110
  2. 65
  3. 26
  4. 29
  5. 158
  6. 72
  7. 52
  8. 102
  9. Supplementary
  10. 62
  11. 16
  12. 94
  13. 74
  14. 62
  15. 55
  16. 13
  17. Complementary
  18. 12
  19. Supplementary
  20. 103
  21. 128
  22. 136
  23. 51
  24. Complementary
  25. 79
  26. 82
  27. 21
  28. 42
  29. 52
  30. 155
  31. Supplementary
  32. 7
  33. 95
  34. 19
  35. 65
  36. 150
  37. 44
  38. 8
  39. 148
  40. 127

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