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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 679 · 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 118° (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 132°. What is the angle vertically opposite to it (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 86°. What is the angle vertically opposite to it (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 142°. What is the angle vertically opposite to it (in degrees)?
  5. 5.What is the supplement of 83° (in degrees)?
  6. 6.What is the complement of 14° (in degrees)?
  7. 7.What is the complement of 80° (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One angle is 133°. What is its corresponding angle (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 109°. What is the angle vertically opposite to it (in degrees)?
  10. 10.What is the supplement of 20° (in degrees)?
  11. 11.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  12. 12.What is the supplement of 159° (in degrees)?
  13. 13.Are 47° and 137° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 88°. What is its alternate interior angle (in degrees)?
  15. 15.What is the complement of 48° (in degrees)?
  16. 16.Two angles are supplementary. One is 74° more than the other. What is the bigger angle (in degrees)?
  17. 17.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  18. 18.Two angles are complementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  19. 19.Are 46° and 56° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 110°. What is its other interior angle on the same side of the transversal (in degrees)?
  21. 21.Are 22° and 68° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  22. 22.What is the supplement of 125° (in degrees)?
  23. 23.Are 77° and 13° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  24. 24.Two angles are supplementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  25. 25.What is the supplement of 42° (in degrees)?
  26. 26.What is the complement of 9° (in degrees)?
  27. 27.What is the complement of 27° (in degrees)?
  28. 28.Two angles are supplementary. One is 72° more than the other. What is the bigger angle (in degrees)?
  29. 29.Are 56° and 124° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  30. 30.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two angles are complementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 100°. What is the angle vertically opposite to it (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One angle is 101°. What is its corresponding angle (in degrees)?
  34. 34.What is the complement of 42° (in degrees)?
  35. 35.Are 79° and 94° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  36. 36.Are 73° and 115° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  37. 37.Are 10° and 80° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  38. 38.Are 61° and 29° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  39. 39.What is the supplement of 52° (in degrees)?
  40. 40.What is the supplement of 120° (in degrees)?

Answer key

  1. 62
  2. 132
  3. 86
  4. 142
  5. 97
  6. 76
  7. 10
  8. 133
  9. 109
  10. 160
  11. 50
  12. 21
  13. Neither
  14. 88
  15. 42
  16. 127
  17. 55
  18. 61
  19. Neither
  20. 70
  21. Complementary
  22. 55
  23. Complementary
  24. 112
  25. 138
  26. 81
  27. 63
  28. 126
  29. Supplementary
  30. 75
  31. 79
  32. 100
  33. 101
  34. 48
  35. Neither
  36. Neither
  37. Complementary
  38. Complementary
  39. 128
  40. 60

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