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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 373 · 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 139° (in degrees)?
  2. 2.Two angles are supplementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  3. 3.What is the supplement of 97° (in degrees)?
  4. 4.What is the complement of 54° (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 143°. What is the angle next to it on the same line (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 53°. What is the angle next to it on the same line (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 128°. What is the angle next to it on the same line (in degrees)?
  8. 8.Are 78° and 107° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  9. 9.Two straight lines cross each other. One of the angles formed is 89°. What is the angle vertically opposite to it (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 152°. What is the angle vertically opposite to it (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 106°. What is its other interior angle on the same side of the transversal (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 40°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Are 35° and 19° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  14. 14.What is the supplement of 24° (in degrees)?
  15. 15.What is the supplement of 35° (in degrees)?
  16. 16.What is the supplement of 5° (in degrees)?
  17. 17.What is the complement of 32° (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One angle is 40°. What is its corresponding angle (in degrees)?
  19. 19.Are 69° and 111° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  20. 20.What is the supplement of 167° (in degrees)?
  21. 21.Are 45° and 45° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  22. 22.Two parallel lines are cut by a transversal. One interior angle is 137°. What is its other interior angle on the same side of the transversal (in degrees)?
  23. 23.What is the supplement of 123° (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 97°. What is the angle vertically opposite to it (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 33°. What is the angle vertically opposite to it (in degrees)?
  26. 26.Are 19° and 89° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  27. 27.Two straight lines cross each other. One of the angles formed is 153°. What is the angle vertically opposite to it (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 109°. What is its alternate interior angle (in degrees)?
  29. 29.Two angles are supplementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One angle is 51°. What is its corresponding angle (in degrees)?
  31. 31.Are 43° and 47° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  32. 32.Are 70° and 20° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  33. 33.Are 17° and 163° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  34. 34.Two straight lines cross each other. One of the angles formed is 27°. What is the angle vertically opposite to it (in degrees)?
  35. 35.What is the supplement of 37° (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 69°. What is the angle vertically opposite to it (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One interior angle is 86°. What is its alternate interior angle (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 60°. What is the angle next to it on the same line (in degrees)?
  39. 39.What is the supplement of 102° (in degrees)?
  40. 40.Two angles are supplementary. One is 62° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 41
  2. 118
  3. 83
  4. 36
  5. 37
  6. 127
  7. 52
  8. Neither
  9. 89
  10. 152
  11. 74
  12. 40
  13. Neither
  14. 156
  15. 145
  16. 175
  17. 58
  18. 40
  19. Supplementary
  20. 13
  21. Complementary
  22. 43
  23. 57
  24. 97
  25. 33
  26. Neither
  27. 153
  28. 109
  29. 122
  30. 51
  31. Complementary
  32. Complementary
  33. Supplementary
  34. 27
  35. 143
  36. 69
  37. 86
  38. 120
  39. 78
  40. 121

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