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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 48 · 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 complement of 83° (in degrees)?
  2. 2.Are 68° and 22° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  3. 3.What is the complement of 46° (in degrees)?
  4. 4.What is the complement of 45° (in degrees)?
  5. 5.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the complement of 26° (in degrees)?
  7. 7.What is the complement of 31° (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 101°. What is its alternate interior angle (in degrees)?
  9. 9.What is the supplement of 141° (in degrees)?
  10. 10.Two angles are supplementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  11. 11.Are 60° and 120° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  12. 12.Two angles are supplementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  13. 13.Two angles are supplementary. One is 92° more than the other. What is the bigger angle (in degrees)?
  14. 14.What is the supplement of 13° (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 101°. What is the angle vertically opposite to it (in degrees)?
  16. 16.Are 17° and 143° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  17. 17.Two angles are supplementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One angle is 30°. What is its corresponding angle (in degrees)?
  19. 19.What is the supplement of 68° (in degrees)?
  20. 20.What is the complement of 19° (in degrees)?
  21. 21.What is the supplement of 58° (in degrees)?
  22. 22.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the supplement of 46° (in degrees)?
  24. 24.What is the complement of 5° (in degrees)?
  25. 25.What is the supplement of 37° (in degrees)?
  26. 26.What is the supplement of 160° (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 39°. What is its alternate interior angle (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 110°. What is the angle next to it on the same line (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.What is the supplement of 130° (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 40°. What is its alternate interior angle (in degrees)?
  32. 32.Two angles are supplementary. One is 138° more than the other. What is the bigger angle (in degrees)?
  33. 33.Are 44° and 136° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  34. 34.Are 77° and 103° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  35. 35.Are 36° and 144° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  36. 36.Are 58° and 32° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  37. 37.Two straight lines cross each other. One of the angles formed is 80°. What is the angle next to it on the same line (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One angle is 51°. What is its corresponding angle (in degrees)?
  39. 39.What is the supplement of 145° (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One angle is 41°. What is its corresponding angle (in degrees)?

Answer key

  1. 7
  2. Complementary
  3. 44
  4. 45
  5. 63
  6. 64
  7. 59
  8. 101
  9. 39
  10. 121
  11. Supplementary
  12. 116
  13. 136
  14. 167
  15. 101
  16. Neither
  17. 96
  18. 30
  19. 112
  20. 71
  21. 122
  22. 64
  23. 134
  24. 85
  25. 143
  26. 20
  27. 39
  28. 70
  29. 52
  30. 50
  31. 40
  32. 159
  33. Supplementary
  34. Supplementary
  35. Supplementary
  36. Complementary
  37. 100
  38. 51
  39. 35
  40. 41

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