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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 437 · 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 straight lines cross each other. One of the angles formed is 129°. What is the angle vertically opposite to it (in degrees)?
  2. 2.Are 45° and 94° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  3. 3.What is the supplement of 121° (in degrees)?
  4. 4.What is the supplement of 108° (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 112°. What is the angle next to it on the same line (in degrees)?
  6. 6.What is the supplement of 128° (in degrees)?
  7. 7.What is the supplement of 152° (in degrees)?
  8. 8.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  9. 9.Two parallel lines are cut by a transversal. One interior angle is 71°. What is its other interior angle on the same side of the transversal (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 147°. What is the angle vertically opposite to it (in degrees)?
  11. 11.What is the supplement of 41° (in degrees)?
  12. 12.Two angles are supplementary. One is 114° more than the other. What is the bigger angle (in degrees)?
  13. 13.What is the supplement of 54° (in degrees)?
  14. 14.What is the complement of 76° (in degrees)?
  15. 15.Are 51° and 129° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  16. 16.Two parallel lines are cut by a transversal. One angle is 125°. What is its corresponding angle (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 36°. What is the angle next to it on the same line (in degrees)?
  18. 18.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)?
  19. 19.Are 69° and 111° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  20. 20.What is the complement of 68° (in degrees)?
  21. 21.Are 23° and 67° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  22. 22.What is the complement of 28° (in degrees)?
  23. 23.Are 19° and 161° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  24. 24.What is the complement of 22° (in degrees)?
  25. 25.Two angles are supplementary. One is 40° more than the other. What is the bigger angle (in degrees)?
  26. 26.Are 29° and 151° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 60°. What is its alternate interior angle (in degrees)?
  28. 28.What is the supplement of 42° (in degrees)?
  29. 29.Are 15° and 48° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  30. 30.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One angle is 112°. What is its corresponding angle (in degrees)?
  32. 32.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)?
  33. 33.Two straight lines cross each other. One of the angles formed is 25°. What is the angle vertically opposite to it (in degrees)?
  34. 34.What is the complement of 35° (in degrees)?
  35. 35.What is the complement of 55° (in degrees)?
  36. 36.What is the complement of 34° (in degrees)?
  37. 37.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)?
  38. 38.Two angles are supplementary. One is 90° more than the other. What is the bigger angle (in degrees)?
  39. 39.Two straight lines cross each other. One of the angles formed is 23°. What is the angle vertically opposite to it (in degrees)?
  40. 40.What is the complement of 79° (in degrees)?

Answer key

  1. 129
  2. Neither
  3. 59
  4. 72
  5. 68
  6. 52
  7. 28
  8. 64
  9. 109
  10. 147
  11. 139
  12. 147
  13. 126
  14. 14
  15. Supplementary
  16. 125
  17. 144
  18. 100
  19. Supplementary
  20. 22
  21. Complementary
  22. 62
  23. Supplementary
  24. 68
  25. 110
  26. Supplementary
  27. 60
  28. 138
  29. Neither
  30. 69
  31. 112
  32. 70
  33. 25
  34. 55
  35. 35
  36. 56
  37. 22
  38. 135
  39. 23
  40. 11

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