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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 834 · 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 79° and 101° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  2. 2.Two straight lines cross each other. One of the angles formed is 73°. What is the angle vertically opposite to it (in degrees)?
  3. 3.What is the supplement of 114° (in degrees)?
  4. 4.What is the supplement of 127° (in degrees)?
  5. 5.Two angles are supplementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 44°. What is the angle vertically opposite to it (in degrees)?
  7. 7.Are 53° and 127° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  8. 8.What is the supplement of 103° (in degrees)?
  9. 9.What is the supplement of 28° (in degrees)?
  10. 10.Are 72° and 108° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  11. 11.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  12. 12.What is the complement of 50° (in degrees)?
  13. 13.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  14. 14.What is the complement of 77° (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 139°. What is the angle next to it on the same line (in degrees)?
  16. 16.What is the supplement of 87° (in degrees)?
  17. 17.Are 62° and 158° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  18. 18.What is the supplement of 32° (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 129°. What is its other interior angle on the same side of the transversal (in degrees)?
  20. 20.What is the supplement of 18° (in degrees)?
  21. 21.What is the supplement of 104° (in degrees)?
  22. 22.Two angles are complementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  23. 23.Are 55° and 35° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  24. 24.What is the supplement of 71° (in degrees)?
  25. 25.What is the complement of 17° (in degrees)?
  26. 26.Are 30° and 150° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  27. 27.Are 26° and 131° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  28. 28.What is the supplement of 116° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 121°. What is the angle next to it on the same line (in degrees)?
  30. 30.Are 62° and 47° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  31. 31.Two straight lines cross each other. One of the angles formed is 155°. What is the angle vertically opposite to it (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 63°. What is the angle vertically opposite to it (in degrees)?
  33. 33.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  34. 34.What is the complement of 6° (in degrees)?
  35. 35.What is the supplement of 15° (in degrees)?
  36. 36.Are 22° and 158° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  37. 37.What is the complement of 53° (in degrees)?
  38. 38.Are 14° and 166° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  39. 39.Two angles are supplementary. One is 96° more than the other. What is the bigger angle (in degrees)?
  40. 40.What is the supplement of 37° (in degrees)?

Answer key

  1. Supplementary
  2. 73
  3. 66
  4. 53
  5. 93
  6. 44
  7. Supplementary
  8. 77
  9. 152
  10. Supplementary
  11. 52
  12. 40
  13. 46
  14. 13
  15. 41
  16. 93
  17. Neither
  18. 148
  19. 51
  20. 162
  21. 76
  22. 47
  23. Complementary
  24. 109
  25. 73
  26. Supplementary
  27. Neither
  28. 64
  29. 59
  30. Neither
  31. 155
  32. 63
  33. 57
  34. 84
  35. 165
  36. Supplementary
  37. 37
  38. Supplementary
  39. 138
  40. 143

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