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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 985 · 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 26° (in degrees)?
  2. 2.What is the supplement of 44° (in degrees)?
  3. 3.Two angles are supplementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  4. 4.Are 31° and 59° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  5. 5.Are 26° and 154° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  6. 6.Are 53° and 37° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  7. 7.What is the supplement of 82° (in degrees)?
  8. 8.What is the complement of 21° (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 131°. What is the angle vertically opposite to it (in degrees)?
  10. 10.What is the complement of 59° (in degrees)?
  11. 11.What is the complement of 41° (in degrees)?
  12. 12.What is the complement of 9° (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One interior angle is 144°. What is its other interior angle on the same side of the transversal (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 70°. What is its corresponding angle (in degrees)?
  15. 15.What is the supplement of 64° (in degrees)?
  16. 16.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  17. 17.What is the complement of 66° (in degrees)?
  18. 18.What is the complement of 43° (in degrees)?
  19. 19.What is the complement of 7° (in degrees)?
  20. 20.Are 50° and 130° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  21. 21.What is the supplement of 144° (in degrees)?
  22. 22.What is the supplement of 73° (in degrees)?
  23. 23.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)?
  24. 24.Two straight lines cross each other. One of the angles formed is 51°. What is the angle vertically opposite to it (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 153°. What is the angle next to it on the same line (in degrees)?
  26. 26.Are 54° and 126° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  27. 27.Are 17° and 15° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  28. 28.What is the complement of 68° (in degrees)?
  29. 29.Two angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 156°. What is the angle vertically opposite to it (in degrees)?
  31. 31.Are 22° and 8° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  32. 32.Two parallel lines are cut by a transversal. One angle is 88°. What is its corresponding angle (in degrees)?
  33. 33.What is the complement of 23° (in degrees)?
  34. 34.What is the supplement of 157° (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 127°. What is the angle next to it on the same line (in degrees)?
  36. 36.What is the supplement of 21° (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One angle is 76°. What is its corresponding angle (in degrees)?
  38. 38.Are 16° and 74° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  39. 39.Two straight lines cross each other. One of the angles formed is 40°. What is the angle next to it on the same line (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One interior angle is 59°. What is its other interior angle on the same side of the transversal (in degrees)?

Answer key

  1. 154
  2. 136
  3. 109
  4. Complementary
  5. Supplementary
  6. Complementary
  7. 98
  8. 69
  9. 131
  10. 31
  11. 49
  12. 81
  13. 36
  14. 70
  15. 116
  16. 48
  17. 24
  18. 47
  19. 83
  20. Supplementary
  21. 36
  22. 107
  23. 41
  24. 51
  25. 27
  26. Supplementary
  27. Neither
  28. 22
  29. 60
  30. 156
  31. Neither
  32. 88
  33. 67
  34. 23
  35. 53
  36. 159
  37. 76
  38. Complementary
  39. 140
  40. 121

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