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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 442 · 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 49° (in degrees)?
  2. 2.What is the supplement of 28° (in degrees)?
  3. 3.What is the supplement of 20° (in degrees)?
  4. 4.What is the supplement of 139° (in degrees)?
  5. 5.Are 74° and 13° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  6. 6.What is the supplement of 70° (in degrees)?
  7. 7.Two angles are supplementary. One is 102° more than the other. What is the bigger angle (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 117°. What is the angle vertically opposite to it (in degrees)?
  9. 9.What is the complement of 24° (in degrees)?
  10. 10.What is the supplement of 162° (in degrees)?
  11. 11.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 46°. What is the angle next to it on the same line (in degrees)?
  13. 13.What is the complement of 27° (in degrees)?
  14. 14.What is the complement of 66° (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 68°. What is its alternate interior angle (in degrees)?
  16. 16.What is the complement of 23° (in degrees)?
  17. 17.Two angles are supplementary. One is 80° more than the other. What is the bigger angle (in degrees)?
  18. 18.What is the supplement of 128° (in degrees)?
  19. 19.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  20. 20.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One angle is 80°. What is its corresponding angle (in degrees)?
  22. 22.What is the complement of 71° (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 107°. What is the angle vertically opposite to it (in degrees)?
  24. 24.What is the supplement of 116° (in degrees)?
  25. 25.Are 36° and 54° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  26. 26.Are 66° and 24° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  27. 27.Two straight lines cross each other. One of the angles formed is 30°. What is the angle next to it on the same line (in degrees)?
  28. 28.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 24°. What is the angle vertically opposite to it (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 72°. What is its alternate interior angle (in degrees)?
  31. 31.Are 22° and 68° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  32. 32.What is the complement of 21° (in degrees)?
  33. 33.Are 52° and 38° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  34. 34.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the complement of 17° (in degrees)?
  36. 36.Are 65° and 150° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  37. 37.Two parallel lines are cut by a transversal. One interior angle is 123°. What is its other interior angle on the same side of the transversal (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 124°. What is the angle vertically opposite to it (in degrees)?
  39. 39.What is the supplement of 46° (in degrees)?
  40. 40.Are 29° and 151° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither

Answer key

  1. 131
  2. 152
  3. 160
  4. 41
  5. Neither
  6. 110
  7. 141
  8. 117
  9. 66
  10. 18
  11. 61
  12. 134
  13. 63
  14. 24
  15. 68
  16. 67
  17. 130
  18. 52
  19. 78
  20. 62
  21. 80
  22. 19
  23. 107
  24. 64
  25. Complementary
  26. Complementary
  27. 150
  28. 54
  29. 24
  30. 72
  31. Complementary
  32. 69
  33. Complementary
  34. 68
  35. 73
  36. Neither
  37. 57
  38. 124
  39. 134
  40. Supplementary

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