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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 755 · 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 angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  2. 2.Are 36° and 54° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  3. 3.Two parallel lines are cut by a transversal. One interior angle is 33°. What is its other interior angle on the same side of the transversal (in degrees)?
  4. 4.What is the supplement of 43° (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 72°. What is its alternate interior angle (in degrees)?
  6. 6.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One interior angle is 136°. What is its alternate interior angle (in degrees)?
  8. 8.What is the supplement of 93° (in degrees)?
  9. 9.Are 10° and 11° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  10. 10.What is the supplement of 9° (in degrees)?
  11. 11.What is the complement of 51° (in degrees)?
  12. 12.What is the supplement of 36° (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One angle is 66°. What is its corresponding angle (in degrees)?
  14. 14.What is the supplement of 68° (in degrees)?
  15. 15.What is the supplement of 74° (in degrees)?
  16. 16.What is the complement of 25° (in degrees)?
  17. 17.What is the supplement of 87° (in degrees)?
  18. 18.Are 64° and 39° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  19. 19.What is the complement of 29° (in degrees)?
  20. 20.Two angles are complementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 45°. What is the angle next to it on the same line (in degrees)?
  22. 22.Two angles are supplementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the supplement of 84° (in degrees)?
  24. 24.What is the supplement of 168° (in degrees)?
  25. 25.Are 30° and 37° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  26. 26.Two straight lines cross each other. One of the angles formed is 151°. What is the angle vertically opposite to it (in degrees)?
  27. 27.What is the complement of 14° (in degrees)?
  28. 28.Two angles are complementary. One is 20° more than the other. What is the bigger angle (in degrees)?
  29. 29.Are 50° and 130° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  30. 30.Two angles are complementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two angles are supplementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 114°. What is the angle vertically opposite to it (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 75°. What is its alternate interior angle (in degrees)?
  34. 34.Are 44° and 159° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  35. 35.What is the supplement of 5° (in degrees)?
  36. 36.What is the supplement of 92° (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 112°. What is the angle vertically opposite to it (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 125°. What is its alternate interior angle (in degrees)?
  39. 39.What is the supplement of 62° (in degrees)?
  40. 40.What is the supplement of 94° (in degrees)?

Answer key

  1. 54
  2. Complementary
  3. 147
  4. 137
  5. 72
  6. 67
  7. 136
  8. 87
  9. Neither
  10. 171
  11. 39
  12. 144
  13. 66
  14. 112
  15. 106
  16. 65
  17. 93
  18. Neither
  19. 61
  20. 46
  21. 135
  22. 120
  23. 96
  24. 12
  25. Neither
  26. 151
  27. 76
  28. 55
  29. Supplementary
  30. 47
  31. 110
  32. 114
  33. 75
  34. Neither
  35. 175
  36. 88
  37. 112
  38. 125
  39. 118
  40. 86

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