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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 445 · 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 61° and 29° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  2. 2.What is the supplement of 32° (in degrees)?
  3. 3.Two angles are supplementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  4. 4.What is the complement of 27° (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 41°. What is the angle next to it on the same line (in degrees)?
  6. 6.What is the supplement of 115° (in degrees)?
  7. 7.What is the supplement of 61° (in degrees)?
  8. 8.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  9. 9.Are 17° and 84° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  10. 10.What is the complement of 73° (in degrees)?
  11. 11.Are 77° and 13° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 72°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 126°. What is the angle vertically opposite to it (in degrees)?
  14. 14.Are 53° and 37° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  15. 15.Two parallel lines are cut by a transversal. One angle is 94°. What is its corresponding angle (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 50°. What is the angle vertically opposite to it (in degrees)?
  17. 17.What is the supplement of 131° (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 120°. What is the angle vertically opposite to it (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One angle is 58°. What is its corresponding angle (in degrees)?
  20. 20.What is the supplement of 163° (in degrees)?
  21. 21.Are 60° and 141° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  22. 22.What is the complement of 57° (in degrees)?
  23. 23.What is the complement of 29° (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 100°. What is its alternate interior angle (in degrees)?
  25. 25.What is the supplement of 125° (in degrees)?
  26. 26.What is the supplement of 75° (in degrees)?
  27. 27.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  28. 28.What is the complement of 70° (in degrees)?
  29. 29.Two angles are supplementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  30. 30.Are 55° and 35° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  31. 31.Are 70° and 110° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 40°. What is its alternate interior angle (in degrees)?
  33. 33.What is the supplement of 24° (in degrees)?
  34. 34.Two angles are supplementary. One is 96° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the supplement of 142° (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 150°. What is the angle vertically opposite to it (in degrees)?
  37. 37.Are 15° and 75° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  38. 38.Two angles are supplementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  39. 39.What is the complement of 44° (in degrees)?
  40. 40.Are 57° and 33° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither

Answer key

  1. Complementary
  2. 148
  3. 102
  4. 63
  5. 139
  6. 65
  7. 119
  8. 54
  9. Neither
  10. 17
  11. Complementary
  12. 108
  13. 126
  14. Complementary
  15. 94
  16. 50
  17. 49
  18. 120
  19. 58
  20. 17
  21. Neither
  22. 33
  23. 61
  24. 100
  25. 55
  26. 105
  27. 78
  28. 20
  29. 114
  30. Complementary
  31. Supplementary
  32. 40
  33. 156
  34. 138
  35. 38
  36. 150
  37. Complementary
  38. 106
  39. 46
  40. Complementary

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