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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 507 · 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 supplement of 40° (in degrees)?
  2. 2.What is the supplement of 81° (in degrees)?
  3. 3.Are 65° and 118° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  4. 4.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)?
  5. 5.Two straight lines cross each other. One of the angles formed is 111°. What is the angle vertically opposite to it (in degrees)?
  6. 6.Are 60° and 120° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  7. 7.Two straight lines cross each other. One of the angles formed is 94°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 111°. What is the angle next to it on the same line (in degrees)?
  9. 9.What is the supplement of 136° (in degrees)?
  10. 10.What is the supplement of 15° (in degrees)?
  11. 11.Are 66° and 24° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  12. 12.What is the supplement of 156° (in degrees)?
  13. 13.Are 23° and 157° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  14. 14.Are 71° and 19° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  15. 15.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)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 53°. What is its alternate interior angle (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 158°. What is the angle vertically opposite to it (in degrees)?
  18. 18.What is the supplement of 128° (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 47°. What is its other interior angle on the same side of the transversal (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One angle is 128°. What is its corresponding angle (in degrees)?
  21. 21.What is the complement of 61° (in degrees)?
  22. 22.Are 53° and 127° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  23. 23.Two straight lines cross each other. One of the angles formed is 53°. What is the angle next to it on the same line (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 149°. What is its alternate interior angle (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 76°. What is its alternate interior angle (in degrees)?
  26. 26.What is the supplement of 89° (in degrees)?
  27. 27.What is the complement of 19° (in degrees)?
  28. 28.Two angles are supplementary. One is 102° more than the other. What is the bigger angle (in degrees)?
  29. 29.What is the complement of 23° (in degrees)?
  30. 30.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One angle is 142°. What is its corresponding angle (in degrees)?
  32. 32.Are 36° and 6° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  33. 33.What is the supplement of 38° (in degrees)?
  34. 34.Are 23° and 67° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  35. 35.Two parallel lines are cut by a transversal. One interior angle is 56°. What is its alternate interior angle (in degrees)?
  36. 36.Are 54° and 40° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  37. 37.Two angles are supplementary. One is 72° more than the other. What is the bigger angle (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 120°. What is the angle vertically opposite to it (in degrees)?
  39. 39.What is the supplement of 62° (in degrees)?
  40. 40.What is the complement of 14° (in degrees)?

Answer key

  1. 140
  2. 99
  3. Neither
  4. 111
  5. 111
  6. Supplementary
  7. 94
  8. 69
  9. 44
  10. 165
  11. Complementary
  12. 24
  13. Supplementary
  14. Complementary
  15. 145
  16. 53
  17. 158
  18. 52
  19. 133
  20. 128
  21. 29
  22. Supplementary
  23. 127
  24. 149
  25. 76
  26. 91
  27. 71
  28. 141
  29. 67
  30. 57
  31. 142
  32. Neither
  33. 142
  34. Complementary
  35. 56
  36. Neither
  37. 126
  38. 120
  39. 118
  40. 76

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