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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 962 · 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 120° (in degrees)?
  2. 2.What is the complement of 11° (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 151°. What is the angle vertically opposite to it (in degrees)?
  4. 4.Two angles are supplementary. One is 108° more than the other. What is the bigger angle (in degrees)?
  5. 5.Two angles are supplementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the complement of 49° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 112°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Two angles are complementary. One is 28° more than the other. What is the bigger angle (in degrees)?
  9. 9.What is the complement of 72° (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One interior angle is 83°. What is its other interior angle on the same side of the transversal (in degrees)?
  11. 11.What is the complement of 30° (in degrees)?
  12. 12.What is the supplement of 134° (in degrees)?
  13. 13.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)?
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 60°. What is its alternate interior angle (in degrees)?
  15. 15.What is the complement of 42° (in degrees)?
  16. 16.What is the supplement of 5° (in degrees)?
  17. 17.What is the supplement of 33° (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One angle is 132°. What is its corresponding angle (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One angle is 71°. What is its corresponding angle (in degrees)?
  20. 20.What is the complement of 33° (in degrees)?
  21. 21.Are 31° and 59° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  22. 22.Are 30° and 150° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  23. 23.What is the supplement of 102° (in degrees)?
  24. 24.What is the complement of 40° (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 130°. What is its alternate interior angle (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 101°. What is the angle vertically opposite to it (in degrees)?
  27. 27.What is the supplement of 89° (in degrees)?
  28. 28.Are 74° and 106° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  29. 29.Two angles are complementary. One is 38° more than the other. What is the bigger angle (in degrees)?
  30. 30.What is the supplement of 11° (in degrees)?
  31. 31.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  32. 32.What is the complement of 48° (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 60°. What is its other interior angle on the same side of the transversal (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 51°. What is its other interior angle on the same side of the transversal (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 127°. What is the angle vertically opposite to it (in degrees)?
  36. 36.Are 33° and 57° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  37. 37.What is the complement of 16° (in degrees)?
  38. 38.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  39. 39.Two angles are supplementary. One is 116° more than the other. What is the bigger angle (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One interior angle is 32°. What is its alternate interior angle (in degrees)?

Answer key

  1. 60
  2. 79
  3. 151
  4. 144
  5. 115
  6. 41
  7. 112
  8. 59
  9. 18
  10. 97
  11. 60
  12. 46
  13. 87
  14. 60
  15. 48
  16. 175
  17. 147
  18. 132
  19. 71
  20. 57
  21. Complementary
  22. Supplementary
  23. 78
  24. 50
  25. 130
  26. 101
  27. 91
  28. Supplementary
  29. 64
  30. 169
  31. 68
  32. 42
  33. 120
  34. 129
  35. 127
  36. Complementary
  37. 74
  38. 49
  39. 148
  40. 32

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