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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 372 · 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 9° (in degrees)?
  2. 2.Are 13° and 167° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  3. 3.Are 58° and 8° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 77°. What is its alternate interior angle (in degrees)?
  5. 5.What is the complement of 65° (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 82°. What is the angle vertically opposite to it (in degrees)?
  7. 7.What is the supplement of 174° (in degrees)?
  8. 8.What is the complement of 69° (in degrees)?
  9. 9.Are 76° and 14° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  10. 10.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  11. 11.Are 26° and 154° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  12. 12.What is the supplement of 157° (in degrees)?
  13. 13.Two angles are supplementary. One is 72° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 152°. What is the angle next to it on the same line (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 78°. What is the angle next to it on the same line (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 107°. What is the angle vertically opposite to it (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 103°. What is the angle vertically opposite to it (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 89°. What is the angle next to it on the same line (in degrees)?
  19. 19.What is the complement of 26° (in degrees)?
  20. 20.What is the supplement of 112° (in degrees)?
  21. 21.What is the complement of 42° (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One angle is 44°. What is its corresponding angle (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 83°. What is its alternate interior angle (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 28°. What is the angle next to it on the same line (in degrees)?
  25. 25.What is the supplement of 38° (in degrees)?
  26. 26.Two parallel lines are cut by a transversal. One angle is 36°. What is its corresponding angle (in degrees)?
  27. 27.What is the supplement of 39° (in degrees)?
  28. 28.What is the supplement of 25° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 104°. What is the angle vertically opposite to it (in degrees)?
  30. 30.Two parallel lines are cut by a transversal. One interior angle is 126°. What is its other interior angle on the same side of the transversal (in degrees)?
  31. 31.What is the complement of 73° (in degrees)?
  32. 32.What is the supplement of 120° (in degrees)?
  33. 33.What is the supplement of 63° (in degrees)?
  34. 34.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  35. 35.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One interior angle is 47°. What is its other interior angle on the same side of the transversal (in degrees)?
  37. 37.What is the supplement of 144° (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 76°. What is its alternate interior angle (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 61°. What is its other interior angle on the same side of the transversal (in degrees)?
  40. 40.Are 41° and 139° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither

Answer key

  1. 171
  2. Supplementary
  3. Neither
  4. 77
  5. 25
  6. 82
  7. 6
  8. 21
  9. Complementary
  10. 76
  11. Supplementary
  12. 23
  13. 126
  14. 28
  15. 102
  16. 107
  17. 103
  18. 91
  19. 64
  20. 68
  21. 48
  22. 44
  23. 83
  24. 152
  25. 142
  26. 36
  27. 141
  28. 155
  29. 104
  30. 54
  31. 17
  32. 60
  33. 117
  34. 64
  35. 68
  36. 133
  37. 36
  38. 76
  39. 119
  40. Supplementary

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