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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 226 · 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 complement of 78° (in degrees)?
  2. 2.What is the complement of 29° (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One interior angle is 123°. What is its alternate interior angle (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 140°. What is its alternate interior angle (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One angle is 111°. What is its corresponding angle (in degrees)?
  6. 6.Are 46° and 44° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  7. 7.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 51°. What is its other interior angle on the same side of the transversal (in degrees)?
  9. 9.Are 51° and 129° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  10. 10.Two straight lines cross each other. One of the angles formed is 66°. What is the angle vertically opposite to it (in degrees)?
  11. 11.What is the supplement of 44° (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 39°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Are 14° and 166° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  14. 14.Are 79° and 11° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  15. 15.Two straight lines cross each other. One of the angles formed is 148°. What is the angle vertically opposite to it (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 104°. What is the angle vertically opposite to it (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 126°. What is the angle next to it on the same line (in degrees)?
  18. 18.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 29°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 126°. What is its other interior angle on the same side of the transversal (in degrees)?
  21. 21.Are 40° and 140° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  22. 22.What is the complement of 9° (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 113°. What is the angle next to it on the same line (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 110°. What is the angle next to it on the same line (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 121°. What is its other interior angle on the same side of the transversal (in degrees)?
  26. 26.Two angles are supplementary. One is 52° more than the other. What is the bigger angle (in degrees)?
  27. 27.What is the supplement of 21° (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One interior angle is 100°. What is its alternate interior angle (in degrees)?
  29. 29.Two angles are complementary. One is 22° more than the other. What is the bigger angle (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 131°. What is the angle vertically opposite to it (in degrees)?
  31. 31.What is the supplement of 149° (in degrees)?
  32. 32.Two angles are supplementary. One is 110° more than the other. What is the bigger angle (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 32°. What is the angle next to it on the same line (in degrees)?
  34. 34.What is the supplement of 56° (in degrees)?
  35. 35.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  36. 36.Are 30° and 60° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  37. 37.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 66°. What is its other interior angle on the same side of the transversal (in degrees)?
  39. 39.What is the supplement of 24° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 68°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 12
  2. 61
  3. 123
  4. 140
  5. 111
  6. Complementary
  7. 64
  8. 129
  9. Supplementary
  10. 66
  11. 136
  12. 39
  13. Supplementary
  14. Complementary
  15. 148
  16. 104
  17. 54
  18. 53
  19. 29
  20. 54
  21. Supplementary
  22. 81
  23. 67
  24. 70
  25. 59
  26. 116
  27. 159
  28. 100
  29. 56
  30. 131
  31. 31
  32. 145
  33. 148
  34. 124
  35. 57
  36. Complementary
  37. 76
  38. 114
  39. 156
  40. 112

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