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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 997 · 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.Two angles are supplementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  2. 2.Are 10° and 170° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  3. 3.What is the complement of 45° (in degrees)?
  4. 4.Two angles are supplementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 58°. What is the angle next to it on the same line (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 102°. What is the angle vertically opposite to it (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 142°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Are 71° and 109° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  9. 9.What is the supplement of 134° (in degrees)?
  10. 10.Two angles are complementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  11. 11.What is the supplement of 102° (in degrees)?
  12. 12.What is the complement of 27° (in degrees)?
  13. 13.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 75°. What is its alternate interior angle (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 48°. What is its alternate interior angle (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 102°. What is the angle next to it on the same line (in degrees)?
  18. 18.What is the supplement of 52° (in degrees)?
  19. 19.Are 18° and 162° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  20. 20.What is the complement of 21° (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 137°. What is its other interior angle on the same side of the transversal (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One interior angle is 90°. What is its alternate interior angle (in degrees)?
  23. 23.What is the supplement of 165° (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One angle is 144°. What is its corresponding angle (in degrees)?
  25. 25.What is the complement of 30° (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 35°. What is the angle next to it on the same line (in degrees)?
  27. 27.What is the complement of 11° (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 73°. What is the angle vertically opposite to it (in degrees)?
  29. 29.What is the complement of 26° (in degrees)?
  30. 30.What is the complement of 40° (in degrees)?
  31. 31.Are 55° and 35° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 132°. What is its other interior angle on the same side of the transversal (in degrees)?
  33. 33.What is the complement of 43° (in degrees)?
  34. 34.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  35. 35.Are 21° and 69° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  36. 36.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 124°. What is the angle next to it on the same line (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One angle is 68°. What is its corresponding angle (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 61°. What is its other interior angle on the same side of the transversal (in degrees)?
  40. 40.What is the supplement of 48° (in degrees)?

Answer key

  1. 111
  2. Supplementary
  3. 45
  4. 122
  5. 122
  6. 102
  7. 142
  8. Supplementary
  9. 46
  10. 71
  11. 78
  12. 63
  13. 64
  14. 50
  15. 75
  16. 48
  17. 78
  18. 128
  19. Supplementary
  20. 69
  21. 43
  22. 90
  23. 15
  24. 144
  25. 60
  26. 145
  27. 79
  28. 73
  29. 64
  30. 50
  31. Complementary
  32. 48
  33. 47
  34. 59
  35. Complementary
  36. 76
  37. 56
  38. 68
  39. 119
  40. 132

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