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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 325 · 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 96° (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 156°. What is the angle vertically opposite to it (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 152°. What is the angle vertically opposite to it (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One angle is 32°. What is its corresponding angle (in degrees)?
  5. 5.Are 62° and 153° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  6. 6.Two straight lines cross each other. One of the angles formed is 78°. What is the angle next to it on the same line (in degrees)?
  7. 7.What is the complement of 6° (in degrees)?
  8. 8.Are 35° and 55° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  9. 9.Are 61° and 119° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  10. 10.Two parallel lines are cut by a transversal. One angle is 91°. What is its corresponding angle (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 132°. What is the angle vertically opposite to it (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 50°. What is the angle next to it on the same line (in degrees)?
  13. 13.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 143°. What is its alternate interior angle (in degrees)?
  15. 15.What is the supplement of 60° (in degrees)?
  16. 16.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  17. 17.What is the supplement of 116° (in degrees)?
  18. 18.What is the complement of 68° (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 55°. What is the angle next to it on the same line (in degrees)?
  20. 20.What is the supplement of 45° (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 127°. What is its other interior angle on the same side of the transversal (in degrees)?
  22. 22.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One angle is 53°. What is its corresponding angle (in degrees)?
  24. 24.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  25. 25.What is the complement of 19° (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 145°. What is its alternate interior angle (in degrees)?
  27. 27.What is the supplement of 32° (in degrees)?
  28. 28.What is the supplement of 109° (in degrees)?
  29. 29.Are 27° and 136° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  30. 30.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 125°. What is the angle vertically opposite to it (in degrees)?
  32. 32.What is the supplement of 98° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 39°. What is the angle vertically opposite to it (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 68°. What is its other interior angle on the same side of the transversal (in degrees)?
  35. 35.Two parallel lines are cut by a transversal. One interior angle is 80°. What is its alternate interior angle (in degrees)?
  36. 36.What is the supplement of 15° (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 102°. What is the angle vertically opposite to it (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One angle is 130°. What is its corresponding angle (in degrees)?
  39. 39.What is the complement of 31° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 47°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 84
  2. 156
  3. 152
  4. 32
  5. Neither
  6. 102
  7. 84
  8. Complementary
  9. Supplementary
  10. 91
  11. 132
  12. 130
  13. 78
  14. 143
  15. 120
  16. 70
  17. 64
  18. 22
  19. 125
  20. 135
  21. 53
  22. 52
  23. 53
  24. 53
  25. 71
  26. 145
  27. 148
  28. 71
  29. Neither
  30. 76
  31. 125
  32. 82
  33. 39
  34. 112
  35. 80
  36. 165
  37. 102
  38. 130
  39. 59
  40. 133

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