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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 514 · 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 complement of 70° (in degrees)?
  2. 2.What is the supplement of 124° (in degrees)?
  3. 3.What is the supplement of 41° (in degrees)?
  4. 4.Are 35° and 145° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  5. 5.Are 11° and 14° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  6. 6.Two angles are complementary. One is 42° more than the other. What is the bigger angle (in degrees)?
  7. 7.Are 65° and 25° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  8. 8.Are 68° and 22° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  9. 9.What is the supplement of 15° (in degrees)?
  10. 10.What is the complement of 48° (in degrees)?
  11. 11.What is the complement of 24° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 132°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.What is the supplement of 145° (in degrees)?
  14. 14.What is the complement of 76° (in degrees)?
  15. 15.What is the complement of 66° (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 78°. What is its alternate interior angle (in degrees)?
  17. 17.What is the supplement of 148° (in degrees)?
  18. 18.Are 29° and 61° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  19. 19.Are 71° and 19° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  20. 20.Are 26° and 64° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  21. 21.What is the supplement of 59° (in degrees)?
  22. 22.What is the supplement of 54° (in degrees)?
  23. 23.Are 28° and 39° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  24. 24.Two angles are supplementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  25. 25.Are 63° and 117° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  26. 26.What is the supplement of 28° (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One angle is 134°. What is its corresponding angle (in degrees)?
  28. 28.What is the complement of 16° (in degrees)?
  29. 29.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 94°. What is the angle vertically opposite to it (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One angle is 105°. What is its corresponding angle (in degrees)?
  32. 32.Two angles are supplementary. One is 118° more than the other. What is the bigger angle (in degrees)?
  33. 33.Are 77° and 51° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  34. 34.Two straight lines cross each other. One of the angles formed is 152°. What is the angle vertically opposite to it (in degrees)?
  35. 35.Are 61° and 58° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  36. 36.Two parallel lines are cut by a transversal. One angle is 95°. What is its corresponding angle (in degrees)?
  37. 37.Two straight lines cross each other. One of the angles formed is 159°. What is the angle next to it on the same line (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 46°. What is its other interior angle on the same side of the transversal (in degrees)?
  39. 39.Are 48° and 73° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  40. 40.What is the supplement of 101° (in degrees)?

Answer key

  1. 20
  2. 56
  3. 139
  4. Supplementary
  5. Neither
  6. 66
  7. Complementary
  8. Complementary
  9. 165
  10. 42
  11. 66
  12. 48
  13. 35
  14. 14
  15. 24
  16. 78
  17. 32
  18. Complementary
  19. Complementary
  20. Complementary
  21. 121
  22. 126
  23. Neither
  24. 102
  25. Supplementary
  26. 152
  27. 134
  28. 74
  29. 48
  30. 94
  31. 105
  32. 149
  33. Neither
  34. 152
  35. Neither
  36. 95
  37. 21
  38. 134
  39. Neither
  40. 79

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