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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 521 · 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 91° (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One angle is 66°. What is its corresponding angle (in degrees)?
  3. 3.Are 54° and 36° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  4. 4.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 59°. What is the angle next to it on the same line (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 51°. What is its other interior angle on the same side of the transversal (in degrees)?
  7. 7.Are 42° and 138° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  8. 8.Are 32° and 58° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  9. 9.What is the complement of 53° (in degrees)?
  10. 10.Are 59° and 31° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  11. 11.What is the supplement of 157° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 32°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 73°. What is the angle vertically opposite to it (in degrees)?
  14. 14.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  15. 15.What is the supplement of 117° (in degrees)?
  16. 16.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  17. 17.What is the supplement of 129° (in degrees)?
  18. 18.What is the complement of 63° (in degrees)?
  19. 19.What is the supplement of 174° (in degrees)?
  20. 20.Two angles are supplementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 104°. What is the angle vertically opposite to it (in degrees)?
  22. 22.What is the complement of 79° (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One angle is 34°. What is its corresponding angle (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 32°. What is its alternate interior angle (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One angle is 42°. What is its corresponding angle (in degrees)?
  26. 26.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  27. 27.Are 66° and 114° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  28. 28.Two straight lines cross each other. One of the angles formed is 49°. What is the angle vertically opposite to it (in degrees)?
  29. 29.What is the supplement of 25° (in degrees)?
  30. 30.What is the supplement of 140° (in degrees)?
  31. 31.What is the complement of 32° (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 72°. What is the angle next to it on the same line (in degrees)?
  33. 33.What is the complement of 55° (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 20°. What is the angle next to it on the same line (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 75°. What is the angle next to it on the same line (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One angle is 68°. What is its corresponding angle (in degrees)?
  37. 37.What is the complement of 29° (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 70°. What is the angle vertically opposite to it (in degrees)?
  39. 39.What is the supplement of 148° (in degrees)?
  40. 40.What is the supplement of 48° (in degrees)?

Answer key

  1. 89
  2. 66
  3. Complementary
  4. 58
  5. 121
  6. 129
  7. Supplementary
  8. Complementary
  9. 37
  10. Complementary
  11. 23
  12. 148
  13. 73
  14. 72
  15. 63
  16. 46
  17. 51
  18. 27
  19. 6
  20. 122
  21. 104
  22. 11
  23. 34
  24. 32
  25. 42
  26. 80
  27. Supplementary
  28. 49
  29. 155
  30. 40
  31. 58
  32. 108
  33. 35
  34. 160
  35. 105
  36. 68
  37. 61
  38. 70
  39. 32
  40. 132

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