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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 669 · 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.Are 36° and 143° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  2. 2.What is the complement of 11° (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 23°. What is the angle next to it on the same line (in degrees)?
  4. 4.Are 30° and 150° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  5. 5.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  6. 6.Are 13° and 167° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  7. 7.What is the complement of 10° (in degrees)?
  8. 8.What is the supplement of 92° (in degrees)?
  9. 9.What is the supplement of 172° (in degrees)?
  10. 10.What is the supplement of 23° (in degrees)?
  11. 11.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  12. 12.Two angles are supplementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  13. 13.What is the supplement of 170° (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 74°. What is its corresponding angle (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 108°. What is its other interior angle on the same side of the transversal (in degrees)?
  16. 16.Are 47° and 133° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  17. 17.What is the supplement of 33° (in degrees)?
  18. 18.What is the supplement of 146° (in degrees)?
  19. 19.Are 72° and 128° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  20. 20.Two straight lines cross each other. One of the angles formed is 39°. What is the angle next to it on the same line (in degrees)?
  21. 21.What is the supplement of 113° (in degrees)?
  22. 22.Are 63° and 27° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  23. 23.Two angles are supplementary. One is 120° more than the other. What is the bigger angle (in degrees)?
  24. 24.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  25. 25.What is the supplement of 157° (in degrees)?
  26. 26.What is the supplement of 76° (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 27°. What is the angle next to it on the same line (in degrees)?
  28. 28.Are 62° and 118° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  29. 29.What is the complement of 15° (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 115°. What is its other interior angle on the same side of the transversal (in degrees)?
  31. 31.Two angles are supplementary. One is 98° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 147°. What is the angle vertically opposite to it (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One angle is 137°. What is its corresponding angle (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 111°. What is its alternate interior angle (in degrees)?
  35. 35.Two angles are supplementary. One is 96° more than the other. What is the bigger angle (in degrees)?
  36. 36.What is the complement of 42° (in degrees)?
  37. 37.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  38. 38.What is the complement of 14° (in degrees)?
  39. 39.Two angles are supplementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  40. 40.What is the supplement of 13° (in degrees)?

Answer key

  1. Neither
  2. 79
  3. 157
  4. Supplementary
  5. 71
  6. Supplementary
  7. 80
  8. 88
  9. 8
  10. 157
  11. 73
  12. 101
  13. 10
  14. 74
  15. 72
  16. Supplementary
  17. 147
  18. 34
  19. Neither
  20. 141
  21. 67
  22. Complementary
  23. 150
  24. 48
  25. 23
  26. 104
  27. 153
  28. Supplementary
  29. 75
  30. 65
  31. 139
  32. 147
  33. 137
  34. 111
  35. 138
  36. 48
  37. 49
  38. 76
  39. 118
  40. 167

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