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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 837 · 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 63° (in degrees)?
  2. 2.What is the supplement of 100° (in degrees)?
  3. 3.What is the complement of 65° (in degrees)?
  4. 4.Are 71° and 19° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  5. 5.What is the complement of 35° (in degrees)?
  6. 6.What is the supplement of 174° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 27°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  9. 9.What is the supplement of 23° (in degrees)?
  10. 10.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  11. 11.What is the supplement of 172° (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 22°. What is the angle vertically opposite to it (in degrees)?
  13. 13.What is the supplement of 107° (in degrees)?
  14. 14.Two angles are supplementary. One is 86° more than the other. What is the bigger angle (in degrees)?
  15. 15.Are 41° and 49° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 102°. What is its other interior angle on the same side of the transversal (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 135°. What is the angle next to it on the same line (in degrees)?
  18. 18.What is the supplement of 89° (in degrees)?
  19. 19.Two angles are supplementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 142°. What is its alternate interior angle (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 48°. What is its alternate interior angle (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 138°. What is the angle next to it on the same line (in degrees)?
  23. 23.Two angles are complementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  24. 24.What is the supplement of 121° (in degrees)?
  25. 25.Are 45° and 45° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  26. 26.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  27. 27.What is the supplement of 104° (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 131°. What is the angle vertically opposite to it (in degrees)?
  29. 29.Are 15° and 75° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  30. 30.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 37°. What is the angle next to it on the same line (in degrees)?
  32. 32.Two angles are supplementary. One is 138° more than the other. What is the bigger angle (in degrees)?
  33. 33.What is the supplement of 152° (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 62°. What is the angle next to it on the same line (in degrees)?
  35. 35.Are 21° and 159° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  36. 36.What is the supplement of 48° (in degrees)?
  37. 37.What is the complement of 57° (in degrees)?
  38. 38.Two angles are supplementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  39. 39.What is the complement of 6° (in degrees)?
  40. 40.Are 76° and 14° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary

Answer key

  1. 27
  2. 80
  3. 25
  4. Complementary
  5. 55
  6. 6
  7. 27
  8. 69
  9. 157
  10. 71
  11. 8
  12. 22
  13. 73
  14. 133
  15. Complementary
  16. 78
  17. 45
  18. 91
  19. 117
  20. 142
  21. 48
  22. 42
  23. 74
  24. 59
  25. Complementary
  26. 62
  27. 76
  28. 131
  29. Complementary
  30. 51
  31. 143
  32. 159
  33. 28
  34. 118
  35. Supplementary
  36. 132
  37. 33
  38. 118
  39. 84
  40. Complementary

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