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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 252 · 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 51° (in degrees)?
  2. 2.Are 65° and 25° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  3. 3.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  4. 4.Are 28° and 152° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  5. 5.What is the complement of 53° (in degrees)?
  6. 6.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  7. 7.What is the supplement of 61° (in degrees)?
  8. 8.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  9. 9.What is the supplement of 170° (in degrees)?
  10. 10.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One angle is 93°. What is its corresponding angle (in degrees)?
  12. 12.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One interior angle is 59°. What is its alternate interior angle (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 63°. What is its other interior angle on the same side of the transversal (in degrees)?
  15. 15.Are 46° and 134° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  16. 16.Two parallel lines are cut by a transversal. One angle is 137°. What is its corresponding angle (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 125°. What is the angle vertically opposite to it (in degrees)?
  18. 18.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  19. 19.Are 19° and 161° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  20. 20.Are 31° and 59° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  21. 21.What is the complement of 22° (in degrees)?
  22. 22.What is the supplement of 6° (in degrees)?
  23. 23.What is the supplement of 155° (in degrees)?
  24. 24.What is the complement of 64° (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 140°. What is its other interior angle on the same side of the transversal (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One angle is 146°. What is its corresponding angle (in degrees)?
  27. 27.Are 18° and 72° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  28. 28.What is the supplement of 81° (in degrees)?
  29. 29.Two angles are supplementary. One is 104° more than the other. What is the bigger angle (in degrees)?
  30. 30.Two angles are supplementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  31. 31.Are 44° and 46° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  32. 32.What is the supplement of 70° (in degrees)?
  33. 33.Are 10° and 170° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  34. 34.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the supplement of 13° (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One angle is 69°. What is its corresponding angle (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 135°. What is the angle vertically opposite to it (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 39°. What is the angle next to it on the same line (in degrees)?
  39. 39.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  40. 40.What is the supplement of 72° (in degrees)?

Answer key

  1. 39
  2. Complementary
  3. 76
  4. Supplementary
  5. 37
  6. 64
  7. 119
  8. 72
  9. 10
  10. 67
  11. 93
  12. 52
  13. 59
  14. 117
  15. Supplementary
  16. 137
  17. 125
  18. 98
  19. Supplementary
  20. Complementary
  21. 68
  22. 174
  23. 25
  24. 26
  25. 40
  26. 146
  27. Complementary
  28. 99
  29. 142
  30. 92
  31. Complementary
  32. 110
  33. Supplementary
  34. 46
  35. 167
  36. 69
  37. 135
  38. 141
  39. 59
  40. 108

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