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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 798 · 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.Two straight lines cross each other. One of the angles formed is 57°. What is the angle next to it on the same line (in degrees)?
  2. 2.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  3. 3.Are 44° and 136° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  4. 4.Two straight lines cross each other. One of the angles formed is 36°. What is the angle next to it on the same line (in degrees)?
  5. 5.What is the supplement of 102° (in degrees)?
  6. 6.Are 57° and 33° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  7. 7.Are 21° and 69° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  8. 8.Are 15° and 75° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  9. 9.Are 67° and 23° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  10. 10.Two angles are supplementary. One is 72° more than the other. What is the bigger angle (in degrees)?
  11. 11.Are 52° and 126° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  12. 12.What is the supplement of 120° (in degrees)?
  13. 13.What is the supplement of 149° (in degrees)?
  14. 14.What is the complement of 26° (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 138°. What is the angle vertically opposite to it (in degrees)?
  16. 16.What is the complement of 47° (in degrees)?
  17. 17.Two parallel lines are cut by a transversal. One interior angle is 91°. What is its other interior angle on the same side of the transversal (in degrees)?
  18. 18.What is the complement of 74° (in degrees)?
  19. 19.What is the supplement of 45° (in degrees)?
  20. 20.What is the supplement of 133° (in degrees)?
  21. 21.Are 80° and 100° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  22. 22.What is the supplement of 84° (in degrees)?
  23. 23.What is the complement of 18° (in degrees)?
  24. 24.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 93°. What is its alternate interior angle (in degrees)?
  26. 26.Are 79° and 101° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  27. 27.Are 80° and 122° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  28. 28.What is the supplement of 42° (in degrees)?
  29. 29.What is the supplement of 73° (in degrees)?
  30. 30.Two angles are supplementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One angle is 31°. What is its corresponding angle (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 122°. What is its other interior angle on the same side of the transversal (in degrees)?
  35. 35.Two parallel lines are cut by a transversal. One interior angle is 116°. What is its alternate interior angle (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 46°. What is the angle vertically opposite to it (in degrees)?
  37. 37.What is the complement of 21° (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One angle is 62°. What is its corresponding angle (in degrees)?
  39. 39.Two angles are supplementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  40. 40.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)?

Answer key

  1. 123
  2. 98
  3. Supplementary
  4. 144
  5. 78
  6. Complementary
  7. Complementary
  8. Complementary
  9. Complementary
  10. 126
  11. Neither
  12. 60
  13. 31
  14. 64
  15. 138
  16. 43
  17. 89
  18. 16
  19. 135
  20. 47
  21. Supplementary
  22. 96
  23. 72
  24. 56
  25. 93
  26. Supplementary
  27. Neither
  28. 138
  29. 107
  30. 117
  31. 78
  32. 54
  33. 31
  34. 58
  35. 116
  36. 46
  37. 69
  38. 62
  39. 112
  40. 36

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