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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 335 · 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 22° and 80° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  2. 2.Two straight lines cross each other. One of the angles formed is 60°. What is the angle vertically opposite to it (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 139°. What is its corresponding angle (in degrees)?
  4. 4.What is the complement of 11° (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 straight lines cross each other. One of the angles formed is 69°. What is the angle next to it on the same line (in degrees)?
  7. 7.Are 44° and 136° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  8. 8.Are 26° and 81° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  9. 9.What is the complement of 68° (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 158°. What is the angle vertically opposite to it (in degrees)?
  11. 11.Two angles are supplementary. One is 106° more than the other. What is the bigger angle (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 149°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.What is the complement of 38° (in degrees)?
  14. 14.What is the supplement of 8° (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 101°. What is its other interior angle on the same side of the transversal (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One angle is 97°. What is its corresponding angle (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 45°. What is the angle next to it on the same line (in degrees)?
  18. 18.What is the supplement of 18° (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 151°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Two angles are supplementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One angle is 100°. What is its corresponding angle (in degrees)?
  22. 22.What is the complement of 69° (in degrees)?
  23. 23.Are 15° and 75° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  24. 24.Are 76° and 14° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  25. 25.What is the complement of 27° (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 37°. What is the angle next to it on the same line (in degrees)?
  27. 27.What is the complement of 80° (in degrees)?
  28. 28.What is the complement of 7° (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One angle is 120°. What is its corresponding angle (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 128°. What is its alternate interior angle (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One angle is 67°. What is its corresponding angle (in degrees)?
  32. 32.What is the complement of 70° (in degrees)?
  33. 33.What is the supplement of 119° (in degrees)?
  34. 34.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 95°. What is the angle vertically opposite to it (in degrees)?
  36. 36.What is the complement of 23° (in degrees)?
  37. 37.Are 10° and 170° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  38. 38.Two straight lines cross each other. One of the angles formed is 123°. What is the angle next to it on the same line (in degrees)?
  39. 39.Are 49° and 41° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  40. 40.What is the supplement of 118° (in degrees)?

Answer key

  1. Neither
  2. 60
  3. 139
  4. 79
  5. 49
  6. 111
  7. Supplementary
  8. Neither
  9. 22
  10. 158
  11. 143
  12. 31
  13. 52
  14. 172
  15. 79
  16. 97
  17. 135
  18. 162
  19. 151
  20. 112
  21. 100
  22. 21
  23. Complementary
  24. Complementary
  25. 63
  26. 143
  27. 10
  28. 83
  29. 120
  30. 128
  31. 67
  32. 20
  33. 61
  34. 53
  35. 95
  36. 67
  37. Supplementary
  38. 57
  39. Complementary
  40. 62

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