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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 512 · 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 16° (in degrees)?
  2. 2.Are 26° and 107° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  3. 3.What is the supplement of 53° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 150°. What is its alternate interior angle (in degrees)?
  5. 5.Two parallel lines are cut by a transversal. One interior angle is 107°. What is its other interior angle on the same side of the transversal (in degrees)?
  6. 6.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 54°. What is the angle vertically opposite to it (in degrees)?
  8. 8.What is the supplement of 101° (in degrees)?
  9. 9.Two parallel lines are cut by a transversal. One angle is 61°. What is its corresponding angle (in degrees)?
  10. 10.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  11. 11.What is the supplement of 13° (in degrees)?
  12. 12.What is the supplement of 62° (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One interior angle is 56°. What is its other interior angle on the same side of the transversal (in degrees)?
  14. 14.What is the supplement of 121° (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 76°. What is the angle next to it on the same line (in degrees)?
  16. 16.Are 18° and 25° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  17. 17.Are 71° and 71° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  18. 18.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  19. 19.What is the complement of 51° (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 44°. What is its other interior angle on the same side of the transversal (in degrees)?
  21. 21.Are 12° and 120° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  22. 22.What is the complement of 23° (in degrees)?
  23. 23.What is the supplement of 55° (in degrees)?
  24. 24.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)?
  25. 25.Are 22° and 68° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  26. 26.What is the supplement of 54° (in degrees)?
  27. 27.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)?
  28. 28.What is the complement of 18° (in degrees)?
  29. 29.Two angles are supplementary. One is 88° more than the other. What is the bigger angle (in degrees)?
  30. 30.What is the supplement of 24° (in degrees)?
  31. 31.What is the supplement of 48° (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 55°. What is its other interior angle on the same side of the transversal (in degrees)?
  33. 33.Two angles are supplementary. One is 84° more than the other. What is the bigger angle (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 98°. What is the angle vertically opposite to it (in degrees)?
  35. 35.Are 36° and 54° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  36. 36.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  37. 37.What is the supplement of 8° (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 70°. What is the angle next to it on the same line (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One angle is 33°. What is its corresponding angle (in degrees)?
  40. 40.What is the complement of 10° (in degrees)?

Answer key

  1. 74
  2. Neither
  3. 127
  4. 150
  5. 73
  6. 52
  7. 54
  8. 79
  9. 61
  10. 75
  11. 167
  12. 118
  13. 124
  14. 59
  15. 104
  16. Neither
  17. Neither
  18. 72
  19. 39
  20. 136
  21. Neither
  22. 67
  23. 125
  24. 48
  25. Complementary
  26. 126
  27. 21
  28. 72
  29. 134
  30. 156
  31. 132
  32. 125
  33. 132
  34. 98
  35. Complementary
  36. 78
  37. 172
  38. 110
  39. 33
  40. 80

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