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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 278 · 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 88° (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One angle is 43°. What is its corresponding angle (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 99°. What is the angle next to it on the same line (in degrees)?
  4. 4.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 121°. What is the angle next to it on the same line (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 59°. What is its other interior angle on the same side of the transversal (in degrees)?
  7. 7.What is the complement of 13° (in degrees)?
  8. 8.What is the complement of 68° (in degrees)?
  9. 9.What is the complement of 36° (in degrees)?
  10. 10.What is the complement of 42° (in degrees)?
  11. 11.Are 10° and 170° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  12. 12.Two straight lines cross each other. One of the angles formed is 60°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Are 30° and 76° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  14. 14.Two parallel lines are cut by a transversal. One angle is 140°. What is its corresponding angle (in degrees)?
  15. 15.What is the complement of 8° (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 61°. What is its alternate interior angle (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One interior angle is 52°. What is its alternate interior angle (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 44°. What is the angle next to it on the same line (in degrees)?
  19. 19.Two angles are supplementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  20. 20.Are 72° and 18° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  21. 21.Are 26° and 154° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  22. 22.What is the complement of 43° (in degrees)?
  23. 23.What is the supplement of 15° (in degrees)?
  24. 24.What is the supplement of 138° (in degrees)?
  25. 25.Are 50° and 130° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  26. 26.Two parallel lines are cut by a transversal. One angle is 132°. What is its corresponding angle (in degrees)?
  27. 27.Are 30° and 137° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  28. 28.What is the supplement of 125° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 133°. What is the angle next to it on the same line (in degrees)?
  30. 30.What is the supplement of 115° (in degrees)?
  31. 31.Two angles are supplementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 82°. What is its alternate interior angle (in degrees)?
  33. 33.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  34. 34.What is the complement of 16° (in degrees)?
  35. 35.Two parallel lines are cut by a transversal. One interior angle is 129°. What is its alternate interior angle (in degrees)?
  36. 36.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  37. 37.What is the supplement of 118° (in degrees)?
  38. 38.What is the complement of 33° (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One angle is 44°. What is its corresponding angle (in degrees)?
  40. 40.What is the complement of 74° (in degrees)?

Answer key

  1. 92
  2. 43
  3. 81
  4. 58
  5. 59
  6. 121
  7. 77
  8. 22
  9. 54
  10. 48
  11. Supplementary
  12. 60
  13. Neither
  14. 140
  15. 82
  16. 61
  17. 52
  18. 136
  19. 107
  20. Complementary
  21. Supplementary
  22. 47
  23. 165
  24. 42
  25. Supplementary
  26. 132
  27. Neither
  28. 55
  29. 47
  30. 65
  31. 118
  32. 82
  33. 78
  34. 74
  35. 129
  36. 59
  37. 62
  38. 57
  39. 44
  40. 16

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