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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 473 · 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 37° and 53° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  2. 2.Two straight lines cross each other. One of the angles formed is 112°. What is the angle next to it on the same line (in degrees)?
  3. 3.What is the supplement of 28° (in degrees)?
  4. 4.Two angles are supplementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  5. 5.What is the complement of 71° (in degrees)?
  6. 6.What is the complement of 65° (in degrees)?
  7. 7.What is the complement of 40° (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 76°. What is its alternate interior angle (in degrees)?
  9. 9.What is the complement of 47° (in degrees)?
  10. 10.What is the supplement of 12° (in degrees)?
  11. 11.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  12. 12.What is the complement of 23° (in degrees)?
  13. 13.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  14. 14.Are 59° and 31° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  15. 15.What is the complement of 10° (in degrees)?
  16. 16.Two angles are supplementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  17. 17.Two angles are supplementary. One is 132° more than the other. What is the bigger angle (in degrees)?
  18. 18.What is the supplement of 100° (in degrees)?
  19. 19.Two angles are complementary. One is 50° 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 48°. What is its other interior angle on the same side of the transversal (in degrees)?
  21. 21.Two angles are supplementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  22. 22.Are 42° and 138° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 88°. What is its alternate interior angle (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 86°. What is the angle vertically opposite to it (in degrees)?
  25. 25.What is the complement of 50° (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One interior angle is 43°. What is its alternate interior angle (in degrees)?
  27. 27.Are 73° and 17° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  28. 28.What is the supplement of 151° (in degrees)?
  29. 29.What is the complement of 16° (in degrees)?
  30. 30.Two angles are supplementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 134°. What is the angle next to it on the same line (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 25°. What is the angle next to it on the same line (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One angle is 56°. What is its corresponding angle (in degrees)?
  34. 34.Are 11° and 79° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  35. 35.What is the supplement of 68° (in degrees)?
  36. 36.What is the supplement of 167° (in degrees)?
  37. 37.What is the supplement of 32° (in degrees)?
  38. 38.Are 20° and 70° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  39. 39.Are 23° and 157° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  40. 40.What is the supplement of 8° (in degrees)?

Answer key

  1. Complementary
  2. 68
  3. 152
  4. 108
  5. 19
  6. 25
  7. 50
  8. 76
  9. 43
  10. 168
  11. 57
  12. 67
  13. 76
  14. Complementary
  15. 80
  16. 92
  17. 156
  18. 80
  19. 70
  20. 132
  21. 100
  22. Supplementary
  23. 88
  24. 86
  25. 40
  26. 43
  27. Complementary
  28. 29
  29. 74
  30. 102
  31. 46
  32. 155
  33. 56
  34. Complementary
  35. 112
  36. 13
  37. 148
  38. Complementary
  39. Supplementary
  40. 172

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