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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 316 · 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 18° and 162° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  2. 2.Two parallel lines are cut by a transversal. One interior angle is 117°. What is its alternate interior angle (in degrees)?
  3. 3.What is the complement of 82° (in degrees)?
  4. 4.What is the supplement of 120° (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 31°. What is its other interior angle on the same side of the transversal (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One interior angle is 32°. What is its other interior angle on the same side of the transversal (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 21°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Two angles are supplementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  9. 9.What is the supplement of 44° (in degrees)?
  10. 10.What is the supplement of 113° (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 82°. What is the angle next to it on the same line (in degrees)?
  12. 12.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  13. 13.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)?
  14. 14.Two straight lines cross each other. One of the angles formed is 85°. What is the angle next to it on the same line (in degrees)?
  15. 15.Are 44° and 46° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  16. 16.What is the supplement of 129° (in degrees)?
  17. 17.Two angles are supplementary. One is 112° more than the other. What is the bigger angle (in degrees)?
  18. 18.Are 13° and 119° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  19. 19.What is the complement of 64° (in degrees)?
  20. 20.What is the complement of 28° (in degrees)?
  21. 21.What is the complement of 63° (in degrees)?
  22. 22.What is the complement of 22° (in degrees)?
  23. 23.Two angles are complementary. One is 26° more than the other. What is the bigger angle (in degrees)?
  24. 24.Are 47° and 43° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  25. 25.What is the complement of 30° (in degrees)?
  26. 26.What is the supplement of 112° (in degrees)?
  27. 27.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  28. 28.Two parallel lines are cut by a transversal. One angle is 49°. What is its corresponding angle (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 45°. What is the angle vertically opposite to it (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 93°. What is the angle vertically opposite to it (in degrees)?
  31. 31.What is the complement of 46° (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 23°. What is the angle next to it on the same line (in degrees)?
  33. 33.Are 14° and 76° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  34. 34.What is the supplement of 75° (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 80°. What is the angle next to it on the same line (in degrees)?
  36. 36.Two angles are complementary. One is 12° more than the other. What is the bigger angle (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 138°. What is the angle vertically opposite to it (in degrees)?
  38. 38.What is the complement of 38° (in degrees)?
  39. 39.What is the complement of 34° (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One angle is 44°. What is its corresponding angle (in degrees)?

Answer key

  1. Supplementary
  2. 117
  3. 8
  4. 60
  5. 149
  6. 148
  7. 21
  8. 111
  9. 136
  10. 67
  11. 98
  12. 64
  13. 148
  14. 95
  15. Complementary
  16. 51
  17. 146
  18. Neither
  19. 26
  20. 62
  21. 27
  22. 68
  23. 58
  24. Complementary
  25. 60
  26. 68
  27. 68
  28. 49
  29. 45
  30. 93
  31. 44
  32. 157
  33. Complementary
  34. 105
  35. 100
  36. 51
  37. 138
  38. 52
  39. 56
  40. 44

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