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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 322 · 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 75° and 123° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  2. 2.What is the supplement of 56° (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 144°. What is its corresponding angle (in degrees)?
  4. 4.Are 44° and 46° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  5. 5.Two angles are supplementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the supplement of 93° (in degrees)?
  7. 7.Are 13° and 77° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  8. 8.What is the supplement of 79° (in degrees)?
  9. 9.What is the complement of 57° (in degrees)?
  10. 10.What is the supplement of 16° (in degrees)?
  11. 11.What is the complement of 26° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One angle is 139°. What is its corresponding angle (in degrees)?
  13. 13.What is the complement of 58° (in degrees)?
  14. 14.Two angles are supplementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  15. 15.Are 51° and 78° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  16. 16.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  17. 17.What is the supplement of 142° (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 138°. What is the angle next to it on the same line (in degrees)?
  19. 19.Are 35° and 55° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  20. 20.Are 18° and 72° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  21. 21.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  22. 22.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two angles are supplementary. One is 90° more than the other. What is the bigger angle (in degrees)?
  24. 24.What is the supplement of 172° (in degrees)?
  25. 25.Are 21° and 86° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  26. 26.Two parallel lines are cut by a transversal. One angle is 93°. What is its corresponding angle (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 48°. What is its alternate interior angle (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 64°. What is its alternate interior angle (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 149°. What is its alternate interior angle (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 66°. What is its other interior angle on the same side of the transversal (in degrees)?
  31. 31.What is the complement of 63° (in degrees)?
  32. 32.What is the supplement of 66° (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One angle is 96°. What is its corresponding angle (in degrees)?
  34. 34.Two angles are supplementary. One is 116° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the complement of 74° (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One angle is 39°. What is its corresponding angle (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 149°. What is the angle next to it on the same line (in degrees)?
  38. 38.What is the complement of 53° (in degrees)?
  39. 39.What is the supplement of 11° (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One interior angle is 138°. What is its other interior angle on the same side of the transversal (in degrees)?

Answer key

  1. Neither
  2. 124
  3. 144
  4. Complementary
  5. 99
  6. 87
  7. Complementary
  8. 101
  9. 33
  10. 164
  11. 64
  12. 139
  13. 32
  14. 120
  15. Neither
  16. 46
  17. 38
  18. 42
  19. Complementary
  20. Complementary
  21. 75
  22. 63
  23. 135
  24. 8
  25. Neither
  26. 93
  27. 48
  28. 64
  29. 149
  30. 114
  31. 27
  32. 114
  33. 96
  34. 148
  35. 16
  36. 39
  37. 31
  38. 37
  39. 169
  40. 42

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