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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 290 · 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 34° and 146° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  2. 2.What is the complement of 12° (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One angle is 138°. What is its corresponding angle (in degrees)?
  4. 4.Are 44° and 104° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  5. 5.What is the supplement of 168° (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 102°. What is its other interior angle on the same side of the transversal (in degrees)?
  7. 7.What is the complement of 15° (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 150°. What is the angle next to it on the same line (in degrees)?
  9. 9.Are 10° and 170° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  10. 10.Are 17° and 73° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  11. 11.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  12. 12.What is the complement of 35° (in degrees)?
  13. 13.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  14. 14.Are 24° and 66° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  15. 15.Two parallel lines are cut by a transversal. One interior angle is 134°. 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 interior angle is 109°. What is its alternate interior angle (in degrees)?
  17. 17.What is the supplement of 40° (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 49°. What is the angle vertically opposite to it (in degrees)?
  19. 19.Two angles are supplementary. One is 138° more than the other. What is the bigger angle (in degrees)?
  20. 20.What is the supplement of 143° (in degrees)?
  21. 21.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  22. 22.What is the supplement of 38° (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One angle is 42°. What is its corresponding angle (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 79°. What is its other interior angle on the same side of the transversal (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 145°. What is its alternate interior angle (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One angle is 79°. What is its corresponding angle (in degrees)?
  27. 27.What is the complement of 58° (in degrees)?
  28. 28.What is the supplement of 22° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 22°. What is the angle vertically opposite to it (in degrees)?
  30. 30.Are 39° and 141° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 111°. What is its alternate interior angle (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 86°. What is the angle vertically opposite to it (in degrees)?
  33. 33.Two angles are complementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  34. 34.Are 50° and 130° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  35. 35.What is the supplement of 136° (in degrees)?
  36. 36.What is the complement of 83° (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 30°. What is the angle next to it on the same line (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 59°. What is the angle vertically opposite to it (in degrees)?
  39. 39.What is the supplement of 86° (in degrees)?
  40. 40.Two angles are supplementary. One is 116° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. Supplementary
  2. 78
  3. 138
  4. Neither
  5. 12
  6. 78
  7. 75
  8. 30
  9. Supplementary
  10. Complementary
  11. 80
  12. 55
  13. 46
  14. Complementary
  15. 46
  16. 109
  17. 140
  18. 49
  19. 159
  20. 37
  21. 67
  22. 142
  23. 42
  24. 101
  25. 145
  26. 79
  27. 32
  28. 158
  29. 22
  30. Supplementary
  31. 111
  32. 86
  33. 77
  34. Supplementary
  35. 44
  36. 7
  37. 150
  38. 59
  39. 94
  40. 148

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