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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 954 · 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 supplement of 5° (in degrees)?
  2. 2.Are 24° and 163° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  3. 3.Two angles are supplementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One angle is 50°. What is its corresponding angle (in degrees)?
  5. 5.What is the complement of 72° (in degrees)?
  6. 6.What is the supplement of 148° (in degrees)?
  7. 7.Two angles are supplementary. One is 122° more than the other. What is the bigger angle (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 43°. What is the angle next to it on the same line (in degrees)?
  9. 9.What is the supplement of 66° (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 39°. What is the angle vertically opposite to it (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 103°. What is its other interior angle on the same side of the transversal (in degrees)?
  12. 12.What is the supplement of 13° (in degrees)?
  13. 13.Are 55° and 35° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  14. 14.What is the complement of 61° (in degrees)?
  15. 15.What is the complement of 26° (in degrees)?
  16. 16.What is the supplement of 33° (in degrees)?
  17. 17.Are 72° and 18° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  18. 18.Are 18° and 72° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  19. 19.Two straight lines cross each other. One of the angles formed is 79°. What is the angle next to it on the same line (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 41°. What is its alternate interior angle (in degrees)?
  21. 21.What is the complement of 39° (in degrees)?
  22. 22.What is the supplement of 127° (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 109°. What is its alternate interior angle (in degrees)?
  24. 24.Two angles are supplementary. One is 102° more than the other. What is the bigger angle (in degrees)?
  25. 25.What is the supplement of 144° (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 65°. What is the angle next to it on the same line (in degrees)?
  27. 27.Two angles are complementary. One is 36° more than the other. What is the bigger angle (in degrees)?
  28. 28.What is the supplement of 125° (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One angle is 67°. What is its corresponding angle (in degrees)?
  30. 30.What is the complement of 8° (in degrees)?
  31. 31.What is the supplement of 29° (in degrees)?
  32. 32.Are 21° and 159° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 142°. What is its alternate interior angle (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 150°. What is its alternate interior angle (in degrees)?
  35. 35.Are 16° and 138° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  36. 36.Two parallel lines are cut by a transversal. One angle is 74°. What is its corresponding angle (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One angle is 72°. What is its corresponding angle (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 119°. What is its other interior angle on the same side of the transversal (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 80°. What is its alternate interior angle (in degrees)?
  40. 40.What is the supplement of 87° (in degrees)?

Answer key

  1. 175
  2. Neither
  3. 104
  4. 50
  5. 18
  6. 32
  7. 151
  8. 137
  9. 114
  10. 39
  11. 77
  12. 167
  13. Complementary
  14. 29
  15. 64
  16. 147
  17. Complementary
  18. Complementary
  19. 101
  20. 41
  21. 51
  22. 53
  23. 109
  24. 141
  25. 36
  26. 115
  27. 63
  28. 55
  29. 67
  30. 82
  31. 151
  32. Supplementary
  33. 142
  34. 150
  35. Neither
  36. 74
  37. 72
  38. 61
  39. 80
  40. 93

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