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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 724 · 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 54° (in degrees)?
  2. 2.What is the supplement of 41° (in degrees)?
  3. 3.What is the complement of 82° (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 139°. What is the angle next to it on the same line (in degrees)?
  5. 5.Two angles are supplementary. One is 128° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the supplement of 37° (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One angle is 89°. What is its corresponding angle (in degrees)?
  8. 8.What is the complement of 16° (in degrees)?
  9. 9.Two angles are supplementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  10. 10.What is the complement of 25° (in degrees)?
  11. 11.Are 31° and 23° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  12. 12.What is the complement of 5° (in degrees)?
  13. 13.Two angles are supplementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two angles are supplementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  15. 15.What is the complement of 56° (in degrees)?
  16. 16.What is the complement of 48° (in degrees)?
  17. 17.What is the supplement of 132° (in degrees)?
  18. 18.What is the complement of 78° (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 84°. What is its alternate interior angle (in degrees)?
  20. 20.What is the supplement of 107° (in degrees)?
  21. 21.What is the complement of 17° (in degrees)?
  22. 22.Are 59° and 28° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  23. 23.What is the supplement of 136° (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 109°. What is the angle vertically opposite to it (in degrees)?
  25. 25.What is the complement of 43° (in degrees)?
  26. 26.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  27. 27.What is the complement of 77° (in degrees)?
  28. 28.What is the complement of 13° (in degrees)?
  29. 29.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)?
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 146°. What is its alternate interior angle (in degrees)?
  31. 31.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  32. 32.What is the supplement of 97° (in degrees)?
  33. 33.What is the supplement of 48° (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One angle is 84°. What is its corresponding angle (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 122°. What is the angle next to it on the same line (in degrees)?
  36. 36.Are 19° and 161° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  37. 37.What is the complement of 18° (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 149°. What is its other interior angle on the same side of the transversal (in degrees)?
  39. 39.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  40. 40.Are 55° and 55° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary

Answer key

  1. 126
  2. 139
  3. 8
  4. 41
  5. 154
  6. 143
  7. 89
  8. 74
  9. 112
  10. 65
  11. Neither
  12. 85
  13. 114
  14. 99
  15. 34
  16. 42
  17. 48
  18. 12
  19. 84
  20. 73
  21. 73
  22. Neither
  23. 44
  24. 109
  25. 47
  26. 52
  27. 13
  28. 77
  29. 148
  30. 146
  31. 78
  32. 83
  33. 132
  34. 84
  35. 58
  36. Supplementary
  37. 72
  38. 31
  39. 48
  40. Neither

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