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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 481 · 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 49° and 33° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  2. 2.Two parallel lines are cut by a transversal. One interior angle is 42°. What is its other interior angle on the same side of the transversal (in degrees)?
  3. 3.What is the complement of 34° (in degrees)?
  4. 4.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  5. 5.What is the complement of 48° (in degrees)?
  6. 6.What is the complement of 47° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 94°. What is the angle next to it on the same line (in degrees)?
  8. 8.Are 73° and 17° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  9. 9.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  10. 10.Are 16° and 101° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  11. 11.Two angles are supplementary. One is 50° 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 105°. What is its alternate interior angle (in degrees)?
  13. 13.What is the supplement of 167° (in degrees)?
  14. 14.Are 31° and 59° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  15. 15.What is the supplement of 114° (in degrees)?
  16. 16.Are 12° and 78° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  17. 17.Two parallel lines are cut by a transversal. One interior angle is 37°. What is its alternate interior angle (in degrees)?
  18. 18.What is the complement of 10° (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 85°. What is the angle next to it on the same line (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 50°. What is its other interior angle on the same side of the transversal (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 153°. What is the angle next to it on the same line (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One angle is 93°. What is its corresponding angle (in degrees)?
  23. 23.Are 10° and 170° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  24. 24.What is the complement of 9° (in degrees)?
  25. 25.What is the supplement of 55° (in degrees)?
  26. 26.Are 30° and 150° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  27. 27.Are 31° and 149° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  28. 28.Are 13° and 77° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  29. 29.What is the supplement of 126° (in degrees)?
  30. 30.What is the supplement of 71° (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 48°. What is its alternate interior angle (in degrees)?
  32. 32.What is the supplement of 116° (in degrees)?
  33. 33.Are 69° and 111° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  34. 34.Two angles are supplementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the complement of 14° (in degrees)?
  36. 36.What is the supplement of 87° (in degrees)?
  37. 37.Are 49° and 41° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  38. 38.What is the supplement of 49° (in degrees)?
  39. 39.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One angle is 47°. What is its corresponding angle (in degrees)?

Answer key

  1. Neither
  2. 138
  3. 56
  4. 78
  5. 42
  6. 43
  7. 86
  8. Complementary
  9. 68
  10. Neither
  11. 115
  12. 105
  13. 13
  14. Complementary
  15. 66
  16. Complementary
  17. 37
  18. 80
  19. 95
  20. 130
  21. 27
  22. 93
  23. Supplementary
  24. 81
  25. 125
  26. Supplementary
  27. Supplementary
  28. Complementary
  29. 54
  30. 109
  31. 48
  32. 64
  33. Supplementary
  34. 125
  35. 76
  36. 93
  37. Complementary
  38. 131
  39. 76
  40. 47

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