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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 576 · 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 53° (in degrees)?
  2. 2.Are 12° and 140° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  3. 3.Are 76° and 14° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  4. 4.Are 14° and 38° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  5. 5.What is the supplement of 42° (in degrees)?
  6. 6.What is the complement of 84° (in degrees)?
  7. 7.What is the supplement of 71° (in degrees)?
  8. 8.Are 71° and 109° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  9. 9.Two parallel lines are cut by a transversal. One interior angle is 137°. What is its alternate interior angle (in degrees)?
  10. 10.What is the supplement of 13° (in degrees)?
  11. 11.What is the complement of 18° (in degrees)?
  12. 12.Are 41° and 139° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  13. 13.Two straight lines cross each other. One of the angles formed is 46°. What is the angle vertically opposite to it (in degrees)?
  14. 14.Are 17° and 163° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  15. 15.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)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 73°. What is its alternate interior angle (in degrees)?
  17. 17.What is the supplement of 73° (in degrees)?
  18. 18.Are 11° and 169° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  19. 19.What is the supplement of 38° (in degrees)?
  20. 20.What is the complement of 8° (in degrees)?
  21. 21.Two angles are supplementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One interior angle is 62°. What is its alternate interior angle (in degrees)?
  23. 23.What is the complement of 48° (in degrees)?
  24. 24.What is the supplement of 98° (in degrees)?
  25. 25.Two straight lines cross each other. One of the angles formed is 151°. What is the angle vertically opposite to it (in degrees)?
  26. 26.Are 15° and 75° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  27. 27.What is the supplement of 128° (in degrees)?
  28. 28.What is the supplement of 113° (in degrees)?
  29. 29.What is the supplement of 109° (in degrees)?
  30. 30.What is the supplement of 68° (in degrees)?
  31. 31.What is the supplement of 104° (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 55°. What is the angle next to it on the same line (in degrees)?
  33. 33.Are 26° and 51° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  34. 34.Two parallel lines are cut by a transversal. One angle is 121°. What is its corresponding angle (in degrees)?
  35. 35.What is the complement of 50° (in degrees)?
  36. 36.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)?
  37. 37.Two straight lines cross each other. One of the angles formed is 117°. What is the angle vertically opposite to it (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 112°. What is its alternate interior angle (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 144°. What is its other interior angle on the same side of the transversal (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 157°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 127
  2. Neither
  3. Complementary
  4. Neither
  5. 138
  6. 6
  7. 109
  8. Supplementary
  9. 137
  10. 167
  11. 72
  12. Supplementary
  13. 46
  14. Supplementary
  15. 57
  16. 73
  17. 107
  18. Supplementary
  19. 142
  20. 82
  21. 119
  22. 62
  23. 42
  24. 82
  25. 151
  26. Complementary
  27. 52
  28. 67
  29. 71
  30. 112
  31. 76
  32. 125
  33. Neither
  34. 121
  35. 40
  36. 33
  37. 117
  38. 112
  39. 36
  40. 23

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