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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 304 · 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 79° and 101° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  2. 2.What is the supplement of 116° (in degrees)?
  3. 3.Are 47° and 43° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  4. 4.What is the supplement of 135° (in degrees)?
  5. 5.What is the supplement of 16° (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 125°. What is the angle next to it on the same line (in degrees)?
  7. 7.What is the supplement of 93° (in degrees)?
  8. 8.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  9. 9.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)?
  10. 10.Are 39° and 11° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  11. 11.What is the complement of 72° (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 118°. What is the angle next to it on the same line (in degrees)?
  13. 13.What is the complement of 48° (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 56°. What is the angle vertically opposite to it (in degrees)?
  15. 15.Are 21° and 69° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 117°. What is its other interior angle on the same side of the transversal (in degrees)?
  17. 17.Are 11° and 20° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  18. 18.What is the supplement of 64° (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 146°. What is its alternate interior angle (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 147°. What is its other interior angle on the same side of the transversal (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One angle is 89°. What is its corresponding angle (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 34°. What is the angle next to it on the same line (in degrees)?
  23. 23.What is the supplement of 11° (in degrees)?
  24. 24.Are 39° and 141° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  25. 25.Two angles are supplementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 23°. What is the angle vertically opposite to it (in degrees)?
  27. 27.Two angles are supplementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  28. 28.What is the complement of 27° (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 79°. What is its other interior angle on the same side of the transversal (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 34°. What is its alternate interior angle (in degrees)?
  31. 31.What is the supplement of 63° (in degrees)?
  32. 32.Two angles are supplementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  33. 33.What is the complement of 34° (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 102°. What is its other interior angle on the same side of the transversal (in degrees)?
  35. 35.Two angles are supplementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  36. 36.What is the supplement of 45° (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 84°. What is the angle vertically opposite to it (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 21°. What is the angle vertically opposite to it (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 127°. What is its other interior angle on the same side of the transversal (in degrees)?
  40. 40.Are 74° and 106° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither

Answer key

  1. Supplementary
  2. 64
  3. Complementary
  4. 45
  5. 164
  6. 55
  7. 87
  8. 72
  9. 41
  10. Neither
  11. 18
  12. 62
  13. 42
  14. 56
  15. Complementary
  16. 63
  17. Neither
  18. 116
  19. 146
  20. 33
  21. 89
  22. 146
  23. 169
  24. Supplementary
  25. 105
  26. 23
  27. 111
  28. 63
  29. 101
  30. 34
  31. 117
  32. 107
  33. 56
  34. 78
  35. 112
  36. 135
  37. 84
  38. 21
  39. 53
  40. Supplementary

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