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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 159 · 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 34° and 56° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  2. 2.What is the complement of 21° (in degrees)?
  3. 3.Two angles are supplementary. One is 112° more than the other. What is the bigger angle (in degrees)?
  4. 4.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  5. 5.Two angles are supplementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the complement of 49° (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One interior angle is 77°. What is its other interior angle on the same side of the transversal (in degrees)?
  8. 8.Two angles are complementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  9. 9.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)?
  10. 10.Two angles are complementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  11. 11.What is the complement of 69° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 44°. What is its alternate interior angle (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One angle is 138°. What is its corresponding angle (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 104°. What is its other interior angle on the same side of the transversal (in degrees)?
  15. 15.What is the complement of 7° (in degrees)?
  16. 16.What is the supplement of 123° (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One angle is 98°. What is its corresponding angle (in degrees)?
  18. 18.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 103°. What is its alternate interior angle (in degrees)?
  20. 20.What is the supplement of 36° (in degrees)?
  21. 21.Are 28° and 152° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  22. 22.What is the complement of 64° (in degrees)?
  23. 23.Are 72° and 19° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  24. 24.Two parallel lines are cut by a transversal. One angle is 99°. What is its corresponding angle (in degrees)?
  25. 25.What is the supplement of 101° (in degrees)?
  26. 26.What is the supplement of 13° (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 49°. What is the angle next to it on the same line (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 52°. What is the angle vertically opposite to it (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 34°. What is its alternate interior angle (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 132°. What is the angle next to it on the same line (in degrees)?
  31. 31.Are 51° and 39° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  32. 32.Two straight lines cross each other. One of the angles formed is 35°. What is the angle vertically opposite to it (in degrees)?
  33. 33.Two angles are supplementary. One is 132° more than the other. What is the bigger angle (in degrees)?
  34. 34.What is the complement of 16° (in degrees)?
  35. 35.Are 64° and 11° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  36. 36.Two straight lines cross each other. One of the angles formed is 158°. What is the angle vertically opposite to it (in degrees)?
  37. 37.Are 79° and 11° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  38. 38.Two parallel lines are cut by a transversal. One angle is 107°. What is its corresponding angle (in degrees)?
  39. 39.Are 80° and 100° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  40. 40.What is the supplement of 26° (in degrees)?

Answer key

  1. Complementary
  2. 69
  3. 146
  4. 50
  5. 93
  6. 41
  7. 103
  8. 62
  9. 56
  10. 77
  11. 21
  12. 44
  13. 138
  14. 76
  15. 83
  16. 57
  17. 98
  18. 49
  19. 103
  20. 144
  21. Supplementary
  22. 26
  23. Neither
  24. 99
  25. 79
  26. 167
  27. 131
  28. 52
  29. 34
  30. 48
  31. Complementary
  32. 35
  33. 156
  34. 74
  35. Neither
  36. 158
  37. Complementary
  38. 107
  39. Supplementary
  40. 154

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