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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 247 · 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 complement of 39° (in degrees)?
  2. 2.Are 62° and 118° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  3. 3.Two parallel lines are cut by a transversal. One angle is 54°. What is its corresponding angle (in degrees)?
  4. 4.What is the complement of 7° (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One angle is 68°. What is its corresponding angle (in degrees)?
  6. 6.What is the complement of 34° (in degrees)?
  7. 7.What is the supplement of 36° (in degrees)?
  8. 8.Are 80° and 100° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  9. 9.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  10. 10.What is the complement of 5° (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 33°. What is its alternate interior angle (in degrees)?
  12. 12.What is the supplement of 154° (in degrees)?
  13. 13.Two angles are supplementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two angles are supplementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  15. 15.Are 69° and 111° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  16. 16.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)?
  17. 17.What is the supplement of 52° (in degrees)?
  18. 18.Two angles are supplementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 49°. What is its other interior angle on the same side of the transversal (in degrees)?
  21. 21.What is the complement of 80° (in degrees)?
  22. 22.What is the supplement of 11° (in degrees)?
  23. 23.What is the complement of 65° (in degrees)?
  24. 24.What is the complement of 49° (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 139°. What is its other interior angle on the same side of the transversal (in degrees)?
  26. 26.What is the supplement of 174° (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 57°. What is its other interior angle on the same side of the transversal (in degrees)?
  28. 28.What is the complement of 28° (in degrees)?
  29. 29.Are 16° and 164° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  30. 30.Two straight lines cross each other. One of the angles formed is 114°. What is the angle vertically opposite to it (in degrees)?
  31. 31.What is the complement of 41° (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One angle is 41°. What is its corresponding angle (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 88°. What is the angle next to it on the same line (in degrees)?
  34. 34.What is the complement of 72° (in degrees)?
  35. 35.Are 56° and 124° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  36. 36.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  37. 37.What is the supplement of 56° (in degrees)?
  38. 38.What is the supplement of 73° (in degrees)?
  39. 39.What is the supplement of 158° (in degrees)?
  40. 40.What is the supplement of 21° (in degrees)?

Answer key

  1. 51
  2. Supplementary
  3. 54
  4. 83
  5. 68
  6. 56
  7. 144
  8. Supplementary
  9. 56
  10. 85
  11. 33
  12. 26
  13. 108
  14. 97
  15. Supplementary
  16. 102
  17. 128
  18. 119
  19. 52
  20. 131
  21. 10
  22. 169
  23. 25
  24. 41
  25. 41
  26. 6
  27. 123
  28. 62
  29. Supplementary
  30. 114
  31. 49
  32. 41
  33. 92
  34. 18
  35. Supplementary
  36. 50
  37. 124
  38. 107
  39. 22
  40. 159

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