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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 366 · 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 parallel lines are cut by a transversal. One interior angle is 74°. What is its other interior angle on the same side of the transversal (in degrees)?
  2. 2.What is the complement of 74° (in degrees)?
  3. 3.What is the complement of 71° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 134°. What is its other interior angle on the same side of the transversal (in degrees)?
  5. 5.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  6. 6.What is the complement of 43° (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One interior angle is 49°. What is its alternate interior angle (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 44°. What is the angle next to it on the same line (in degrees)?
  9. 9.Two angles are supplementary. One is 110° more than the other. What is the bigger angle (in degrees)?
  10. 10.What is the supplement of 7° (in degrees)?
  11. 11.Two angles are supplementary. One is 100° more than the other. What is the bigger angle (in degrees)?
  12. 12.Are 38° and 142° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  13. 13.What is the supplement of 125° (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 53°. 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 22°. What is the angle vertically opposite to it (in degrees)?
  16. 16.Are 47° and 38° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  17. 17.Two straight lines cross each other. One of the angles formed is 101°. What is the angle vertically opposite to it (in degrees)?
  18. 18.What is the complement of 36° (in degrees)?
  19. 19.What is the supplement of 101° (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One angle is 147°. What is its corresponding angle (in degrees)?
  21. 21.What is the supplement of 166° (in degrees)?
  22. 22.Are 11° and 79° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 131°. What is its other interior angle on the same side of the transversal (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One angle is 91°. What is its corresponding angle (in degrees)?
  25. 25.Are 24° and 156° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  26. 26.Two parallel lines are cut by a transversal. One angle is 50°. What is its corresponding angle (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 130°. What is the angle vertically opposite to it (in degrees)?
  28. 28.What is the complement of 12° (in degrees)?
  29. 29.What is the supplement of 171° (in degrees)?
  30. 30.What is the complement of 60° (in degrees)?
  31. 31.What is the supplement of 47° (in degrees)?
  32. 32.What is the supplement of 137° (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 140°. What is its alternate interior angle (in degrees)?
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 93°. What is its alternate interior angle (in degrees)?
  35. 35.Two angles are supplementary. One is 34° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two angles are supplementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  37. 37.Are 37° and 53° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  38. 38.What is the supplement of 6° (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One interior angle is 39°. What is its other interior angle on the same side of the transversal (in degrees)?
  40. 40.What is the complement of 26° (in degrees)?

Answer key

  1. 106
  2. 16
  3. 19
  4. 46
  5. 70
  6. 47
  7. 49
  8. 136
  9. 145
  10. 173
  11. 140
  12. Supplementary
  13. 55
  14. 127
  15. 22
  16. Neither
  17. 101
  18. 54
  19. 79
  20. 147
  21. 14
  22. Complementary
  23. 49
  24. 91
  25. Supplementary
  26. 50
  27. 130
  28. 78
  29. 9
  30. 30
  31. 133
  32. 43
  33. 140
  34. 93
  35. 107
  36. 91
  37. Complementary
  38. 174
  39. 141
  40. 64

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