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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 788 · 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 70° and 20° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  2. 2.What is the complement of 52° (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 95°. What is its corresponding angle (in degrees)?
  4. 4.Are 46° and 44° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  5. 5.What is the supplement of 30° (in degrees)?
  6. 6.Two angles are supplementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 97°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  9. 9.What is the supplement of 6° (in degrees)?
  10. 10.What is the supplement of 169° (in degrees)?
  11. 11.What is the complement of 53° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 85°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.Are 24° and 70° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  14. 14.Are 42° and 138° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  15. 15.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  16. 16.What is the supplement of 137° (in degrees)?
  17. 17.Are 58° and 142° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  18. 18.Two parallel lines are cut by a transversal. One angle is 57°. What is its corresponding angle (in degrees)?
  19. 19.What is the supplement of 10° (in degrees)?
  20. 20.What is the supplement of 171° (in degrees)?
  21. 21.Two angles are supplementary. One is 78° more than the other. What is the bigger angle (in degrees)?
  22. 22.Two angles are complementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the supplement of 28° (in degrees)?
  24. 24.What is the supplement of 33° (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 128°. What is the angle vertically opposite to it (in degrees)?
  26. 26.What is the complement of 27° (in degrees)?
  27. 27.What is the complement of 85° (in degrees)?
  28. 28.What is the complement of 65° (in degrees)?
  29. 29.What is the supplement of 119° (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 120°. What is the angle vertically opposite to it (in degrees)?
  31. 31.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)?
  32. 32.What is the complement of 70° (in degrees)?
  33. 33.Are 11° and 79° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  34. 34.What is the complement of 16° (in degrees)?
  35. 35.Are 34° and 117° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  36. 36.Two angles are supplementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One angle is 38°. What is its corresponding angle (in degrees)?
  38. 38.What is the supplement of 37° (in degrees)?
  39. 39.Two angles are supplementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  40. 40.Are 11° and 104° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither

Answer key

  1. Complementary
  2. 38
  3. 95
  4. Complementary
  5. 150
  6. 109
  7. 97
  8. 51
  9. 174
  10. 11
  11. 37
  12. 95
  13. Neither
  14. Supplementary
  15. 61
  16. 43
  17. Neither
  18. 57
  19. 170
  20. 9
  21. 129
  22. 77
  23. 152
  24. 147
  25. 128
  26. 63
  27. 5
  28. 25
  29. 61
  30. 120
  31. 108
  32. 20
  33. Complementary
  34. 74
  35. Neither
  36. 93
  37. 38
  38. 143
  39. 119
  40. Neither

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