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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 169 · 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 12° and 78° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  2. 2.What is the supplement of 172° (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 41°. What is its corresponding angle (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 117°. What is its other interior angle on the same side of the transversal (in degrees)?
  5. 5.Are 79° and 11° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  6. 6.Two straight lines cross each other. One of the angles formed is 160°. What is the angle next to it on the same line (in degrees)?
  7. 7.Are 30° and 150° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  8. 8.Two straight lines cross each other. One of the angles formed is 85°. What is the angle vertically opposite to it (in degrees)?
  9. 9.Two parallel lines are cut by a transversal. One angle is 71°. What is its corresponding angle (in degrees)?
  10. 10.Are 51° and 113° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  11. 11.Are 20° and 91° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  12. 12.What is the complement of 49° (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 160°. What is the angle vertically opposite to it (in degrees)?
  14. 14.Are 55° and 35° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  15. 15.Two angles are supplementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  16. 16.What is the complement of 12° (in degrees)?
  17. 17.What is the supplement of 150° (in degrees)?
  18. 18.What is the complement of 22° (in degrees)?
  19. 19.What is the supplement of 99° (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 36°. What is the angle vertically opposite to it (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 52°. What is its other interior angle on the same side of the transversal (in degrees)?
  22. 22.What is the complement of 33° (in degrees)?
  23. 23.Two angles are supplementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  24. 24.Two angles are supplementary. One is 96° more than the other. What is the bigger angle (in degrees)?
  25. 25.Are 26° and 64° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  26. 26.Two parallel lines are cut by a transversal. One angle is 145°. What is its corresponding angle (in degrees)?
  27. 27.What is the supplement of 36° (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 87°. What is its alternate interior angle (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 20°. What is the angle vertically opposite to it (in degrees)?
  30. 30.Are 53° and 127° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  31. 31.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 91°. What is its other interior angle on the same side of the transversal (in degrees)?
  33. 33.Two angles are supplementary. One is 102° more than the other. What is the bigger angle (in degrees)?
  34. 34.What is the supplement of 7° (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 65°. What is the angle next to it on the same line (in degrees)?
  36. 36.What is the supplement of 42° (in degrees)?
  37. 37.Two angles are supplementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  38. 38.Are 51° and 38° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  39. 39.What is the complement of 28° (in degrees)?
  40. 40.What is the supplement of 8° (in degrees)?

Answer key

  1. Complementary
  2. 8
  3. 41
  4. 63
  5. Complementary
  6. 20
  7. Supplementary
  8. 85
  9. 71
  10. Neither
  11. Neither
  12. 41
  13. 160
  14. Complementary
  15. 112
  16. 78
  17. 30
  18. 68
  19. 81
  20. 36
  21. 128
  22. 57
  23. 91
  24. 138
  25. Complementary
  26. 145
  27. 144
  28. 87
  29. 20
  30. Supplementary
  31. 62
  32. 89
  33. 141
  34. 173
  35. 115
  36. 138
  37. 115
  38. Neither
  39. 62
  40. 172

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