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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 261 · 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 89°. What is the angle next to it on the same line (in degrees)?
  2. 2.Are 12° and 168° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  3. 3.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 142°. What is the angle next to it on the same line (in degrees)?
  5. 5.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  6. 6.Are 18° and 72° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  7. 7.Two angles are supplementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  8. 8.What is the supplement of 68° (in degrees)?
  9. 9.What is the complement of 77° (in degrees)?
  10. 10.Are 37° and 143° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  11. 11.Are 17° and 73° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  12. 12.What is the supplement of 66° (in degrees)?
  13. 13.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  14. 14.What is the supplement of 172° (in degrees)?
  15. 15.What is the supplement of 112° (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 36°. What is the angle vertically opposite to it (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One angle is 149°. What is its corresponding angle (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 41°. What is its other interior angle on the same side of the transversal (in degrees)?
  19. 19.What is the complement of 43° (in degrees)?
  20. 20.What is the supplement of 64° (in degrees)?
  21. 21.What is the supplement of 175° (in degrees)?
  22. 22.Two angles are supplementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the complement of 76° (in degrees)?
  24. 24.Are 76° and 19° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  25. 25.Two angles are supplementary. One is 134° more than the other. What is the bigger angle (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 113°. What is the angle vertically opposite to it (in degrees)?
  27. 27.What is the complement of 61° (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 120°. What is the angle next to it on the same line (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 41°. What is its alternate interior angle (in degrees)?
  30. 30.What is the supplement of 32° (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One angle is 144°. What is its corresponding angle (in degrees)?
  32. 32.Are 80° and 100° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  33. 33.Are 41° and 139° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  34. 34.What is the supplement of 72° (in degrees)?
  35. 35.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  36. 36.What is the complement of 50° (in degrees)?
  37. 37.What is the complement of 78° (in degrees)?
  38. 38.What is the supplement of 148° (in degrees)?
  39. 39.Two angles are supplementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 91
  2. Supplementary
  3. 80
  4. 38
  5. 70
  6. Complementary
  7. 123
  8. 112
  9. 13
  10. Supplementary
  11. Complementary
  12. 114
  13. 60
  14. 8
  15. 68
  16. 36
  17. 149
  18. 139
  19. 47
  20. 116
  21. 5
  22. 103
  23. 14
  24. Neither
  25. 157
  26. 113
  27. 29
  28. 60
  29. 41
  30. 148
  31. 144
  32. Supplementary
  33. Supplementary
  34. 108
  35. 79
  36. 40
  37. 12
  38. 32
  39. 92
  40. 76

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