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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 740 · 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 supplement of 74° (in degrees)?
  2. 2.What is the supplement of 11° (in degrees)?
  3. 3.What is the complement of 52° (in degrees)?
  4. 4.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  5. 5.What is the complement of 37° (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 112°. What is its alternate interior angle (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 44°. What is the angle next to it on the same line (in degrees)?
  8. 8.Are 68° and 112° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  9. 9.What is the supplement of 175° (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One angle is 130°. What is its corresponding angle (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 61°. What is its alternate interior angle (in degrees)?
  12. 12.What is the supplement of 169° (in degrees)?
  13. 13.Two angles are supplementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  14. 14.Are 18° and 61° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  15. 15.Are 12° and 167° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  16. 16.Two straight lines cross each other. One of the angles formed is 95°. What is the angle vertically opposite to it (in degrees)?
  17. 17.What is the complement of 28° (in degrees)?
  18. 18.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  19. 19.Are 45° and 135° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  20. 20.Two parallel lines are cut by a transversal. One angle is 100°. What is its corresponding angle (in degrees)?
  21. 21.What is the supplement of 140° (in degrees)?
  22. 22.What is the supplement of 78° (in degrees)?
  23. 23.Are 65° and 115° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  24. 24.What is the complement of 61° (in degrees)?
  25. 25.What is the complement of 23° (in degrees)?
  26. 26.What is the complement of 34° (in degrees)?
  27. 27.Two angles are supplementary. One is 140° more than the other. What is the bigger angle (in degrees)?
  28. 28.Are 60° and 30° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  29. 29.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  30. 30.What is the supplement of 47° (in degrees)?
  31. 31.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  32. 32.Are 30° and 60° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  33. 33.Are 50° and 40° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  34. 34.Two straight lines cross each other. One of the angles formed is 159°. What is the angle next to it on the same line (in degrees)?
  35. 35.Are 28° and 62° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  36. 36.What is the supplement of 131° (in degrees)?
  37. 37.Are 73° and 107° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  38. 38.Two straight lines cross each other. One of the angles formed is 120°. What is the angle vertically opposite to it (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 74°. What is its alternate interior angle (in degrees)?
  40. 40.Are 18° and 162° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither

Answer key

  1. 106
  2. 169
  3. 38
  4. 71
  5. 53
  6. 112
  7. 136
  8. Supplementary
  9. 5
  10. 130
  11. 61
  12. 11
  13. 112
  14. Neither
  15. Neither
  16. 95
  17. 62
  18. 48
  19. Supplementary
  20. 100
  21. 40
  22. 102
  23. Supplementary
  24. 29
  25. 67
  26. 56
  27. 160
  28. Complementary
  29. 60
  30. 133
  31. 52
  32. Complementary
  33. Complementary
  34. 21
  35. Complementary
  36. 49
  37. Supplementary
  38. 120
  39. 74
  40. Supplementary

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