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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 529 · 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 supplement of 141° (in degrees)?
  2. 2.Are 67° and 113° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  3. 3.Are 11° and 79° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  4. 4.Two angles are supplementary. One is 138° more than the other. What is the bigger angle (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 99°. What is its other interior angle on the same side of the transversal (in degrees)?
  6. 6.What is the complement of 37° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 30°. What is the angle vertically opposite to it (in degrees)?
  8. 8.What is the supplement of 145° (in degrees)?
  9. 9.Are 73° and 107° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  10. 10.What is the complement of 6° (in degrees)?
  11. 11.Are 26° and 64° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  12. 12.What is the complement of 70° (in degrees)?
  13. 13.What is the complement of 79° (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 127°. What is its corresponding angle (in degrees)?
  15. 15.What is the supplement of 32° (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 59°. 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 25°. What is the angle vertically opposite to it (in degrees)?
  18. 18.Are 62° and 28° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 55°. What is its other interior angle on the same side of the transversal (in degrees)?
  20. 20.Are 60° and 120° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 95°. What is its other interior angle on the same side of the transversal (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One angle is 67°. What is its corresponding angle (in degrees)?
  23. 23.What is the complement of 69° (in degrees)?
  24. 24.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 56°. What is its alternate interior angle (in degrees)?
  27. 27.What is the supplement of 135° (in degrees)?
  28. 28.Are 23° and 127° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  29. 29.Two parallel lines are cut by a transversal. One angle is 101°. What is its corresponding angle (in degrees)?
  30. 30.Are 56° and 34° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 36°. What is its other interior angle on the same side of the transversal (in degrees)?
  32. 32.What is the supplement of 49° (in degrees)?
  33. 33.Are 35° and 145° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  34. 34.Two straight lines cross each other. One of the angles formed is 70°. What is the angle vertically opposite to it (in degrees)?
  35. 35.What is the complement of 67° (in degrees)?
  36. 36.What is the complement of 55° (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 72°. What is the angle vertically opposite to it (in degrees)?
  38. 38.What is the supplement of 171° (in degrees)?
  39. 39.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 39
  2. Supplementary
  3. Complementary
  4. 159
  5. 81
  6. 53
  7. 30
  8. 35
  9. Supplementary
  10. 84
  11. Complementary
  12. 20
  13. 11
  14. 127
  15. 148
  16. 121
  17. 25
  18. Complementary
  19. 125
  20. Supplementary
  21. 85
  22. 67
  23. 21
  24. 48
  25. 50
  26. 56
  27. 45
  28. Neither
  29. 101
  30. Complementary
  31. 144
  32. 131
  33. Supplementary
  34. 70
  35. 23
  36. 35
  37. 72
  38. 9
  39. 68
  40. 51

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