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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 989 · 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 parallel lines are cut by a transversal. One angle is 39°. What is its corresponding angle (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 27°. What is the angle vertically opposite to it (in degrees)?
  3. 3.What is the complement of 77° (in degrees)?
  4. 4.What is the complement of 25° (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 41°. What is the angle vertically opposite to it (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One angle is 69°. What is its corresponding angle (in degrees)?
  7. 7.Are 21° and 69° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  8. 8.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 56°. What is the angle next to it on the same line (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One angle is 70°. What is its corresponding angle (in degrees)?
  11. 11.Are 23° and 67° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  12. 12.Are 16° and 74° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  13. 13.Two angles are supplementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  14. 14.What is the supplement of 51° (in degrees)?
  15. 15.What is the complement of 21° (in degrees)?
  16. 16.What is the supplement of 18° (in degrees)?
  17. 17.What is the supplement of 13° (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 47°. What is its alternate interior angle (in degrees)?
  19. 19.Two angles are supplementary. One is 94° more than the other. What is the bigger angle (in degrees)?
  20. 20.Are 62° and 26° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 149°. What is its alternate interior angle (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 132°. What is the angle next to it on the same line (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 20°. What is the angle vertically opposite to it (in degrees)?
  24. 24.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 93°. What is its other interior angle on the same side of the transversal (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 103°. What is the angle next to it on the same line (in degrees)?
  27. 27.What is the complement of 20° (in degrees)?
  28. 28.Are 48° and 42° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 56°. What is its alternate interior angle (in degrees)?
  30. 30.Are 72° and 18° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  31. 31.Two angles are supplementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One angle is 52°. What is its corresponding angle (in degrees)?
  33. 33.What is the complement of 24° (in degrees)?
  34. 34.What is the complement of 38° (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 160°. What is the angle vertically opposite to it (in degrees)?
  36. 36.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  37. 37.What is the complement of 29° (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 115°. What is the angle vertically opposite to it (in degrees)?
  39. 39.What is the complement of 69° (in degrees)?
  40. 40.Are 26° and 154° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary

Answer key

  1. 39
  2. 27
  3. 13
  4. 65
  5. 41
  6. 69
  7. Complementary
  8. 52
  9. 124
  10. 70
  11. Complementary
  12. Complementary
  13. 124
  14. 129
  15. 69
  16. 162
  17. 167
  18. 47
  19. 137
  20. Neither
  21. 149
  22. 48
  23. 20
  24. 72
  25. 87
  26. 77
  27. 70
  28. Complementary
  29. 56
  30. Complementary
  31. 95
  32. 52
  33. 66
  34. 52
  35. 160
  36. 69
  37. 61
  38. 115
  39. 21
  40. Supplementary

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