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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 332 · 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 6° (in degrees)?
  2. 2.Are 65° and 115° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  3. 3.Two parallel lines are cut by a transversal. One angle is 96°. What is its corresponding angle (in degrees)?
  4. 4.What is the supplement of 86° (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 49°. What is the angle vertically opposite to it (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 137°. What is its alternate interior angle (in degrees)?
  7. 7.Are 17° and 73° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  8. 8.Two straight lines cross each other. One of the angles formed is 25°. What is the angle vertically opposite to it (in degrees)?
  9. 9.What is the supplement of 131° (in degrees)?
  10. 10.What is the supplement of 39° (in degrees)?
  11. 11.What is the complement of 31° (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 135°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Are 46° and 44° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  14. 14.What is the supplement of 167° (in degrees)?
  15. 15.What is the supplement of 56° (in degrees)?
  16. 16.Two angles are supplementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  17. 17.What is the supplement of 63° (in degrees)?
  18. 18.What is the supplement of 129° (in degrees)?
  19. 19.Are 76° and 104° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  20. 20.What is the supplement of 45° (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One angle is 119°. What is its corresponding angle (in degrees)?
  22. 22.What is the complement of 19° (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 87°. What is the angle vertically opposite to it (in degrees)?
  24. 24.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 34°. What is the angle vertically opposite to it (in degrees)?
  26. 26.What is the supplement of 140° (in degrees)?
  27. 27.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)?
  28. 28.What is the supplement of 50° (in degrees)?
  29. 29.Two angles are supplementary. One is 120° 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 107°. What is the angle vertically opposite to it (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 94°. What is its other interior angle on the same side of the transversal (in degrees)?
  32. 32.Are 19° and 161° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  33. 33.Two angles are complementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 67°. What is its other interior angle on the same side of the transversal (in degrees)?
  35. 35.What is the complement of 26° (in degrees)?
  36. 36.What is the supplement of 110° (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One angle is 132°. What is its corresponding angle (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 80°. What is the angle next to it on the same line (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 57°. 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 44°. What is its alternate interior angle (in degrees)?

Answer key

  1. 84
  2. Supplementary
  3. 96
  4. 94
  5. 49
  6. 137
  7. Complementary
  8. 25
  9. 49
  10. 141
  11. 59
  12. 135
  13. Complementary
  14. 13
  15. 124
  16. 99
  17. 117
  18. 51
  19. Supplementary
  20. 135
  21. 119
  22. 71
  23. 87
  24. 75
  25. 34
  26. 40
  27. 68
  28. 130
  29. 150
  30. 107
  31. 86
  32. Supplementary
  33. 65
  34. 113
  35. 64
  36. 70
  37. 132
  38. 100
  39. 123
  40. 44

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