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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 326 · 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 30° and 150° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  2. 2.What is the complement of 20° (in degrees)?
  3. 3.What is the complement of 19° (in degrees)?
  4. 4.What is the complement of 45° (in degrees)?
  5. 5.Two angles are supplementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  6. 6.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)?
  7. 7.What is the supplement of 158° (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 127°. What is its alternate interior angle (in degrees)?
  9. 9.Are 42° and 48° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  10. 10.Two straight lines cross each other. One of the angles formed is 69°. What is the angle next to it on the same line (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One angle is 58°. What is its corresponding angle (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 101°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.What is the supplement of 169° (in degrees)?
  14. 14.What is the supplement of 13° (in degrees)?
  15. 15.What is the supplement of 118° (in degrees)?
  16. 16.What is the complement of 10° (in degrees)?
  17. 17.Are 67° and 140° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  18. 18.Two straight lines cross each other. One of the angles formed is 158°. What is the angle next to it on the same line (in degrees)?
  19. 19.What is the supplement of 146° (in degrees)?
  20. 20.What is the supplement of 130° (in degrees)?
  21. 21.What is the complement of 48° (in degrees)?
  22. 22.What is the supplement of 44° (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 125°. What is its other interior angle on the same side of the transversal (in degrees)?
  24. 24.What is the supplement of 164° (in degrees)?
  25. 25.What is the supplement of 46° (in degrees)?
  26. 26.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  27. 27.Are 13° and 77° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  28. 28.Are 43° and 137° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 90°. What is its alternate interior angle (in degrees)?
  30. 30.Are 76° and 14° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  31. 31.Two parallel lines are cut by a transversal. One interior angle is 121°. What is its alternate interior angle (in degrees)?
  32. 32.Two straight lines cross each other. One of the angles formed is 112°. What is the angle vertically opposite to it (in degrees)?
  33. 33.What is the supplement of 125° (in degrees)?
  34. 34.Are 19° and 161° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  35. 35.What is the complement of 21° (in degrees)?
  36. 36.What is the complement of 35° (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 118°. What is the angle vertically opposite to it (in degrees)?
  38. 38.What is the complement of 47° (in degrees)?
  39. 39.What is the complement of 18° (in degrees)?
  40. 40.What is the complement of 6° (in degrees)?

Answer key

  1. Supplementary
  2. 70
  3. 71
  4. 45
  5. 124
  6. 95
  7. 22
  8. 127
  9. Complementary
  10. 111
  11. 58
  12. 79
  13. 11
  14. 167
  15. 62
  16. 80
  17. Neither
  18. 22
  19. 34
  20. 50
  21. 42
  22. 136
  23. 55
  24. 16
  25. 134
  26. 66
  27. Complementary
  28. Supplementary
  29. 90
  30. Complementary
  31. 121
  32. 112
  33. 55
  34. Supplementary
  35. 69
  36. 55
  37. 118
  38. 43
  39. 72
  40. 84

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