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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 41 · 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 straight lines cross each other. One of the angles formed is 139°. What is the angle next to it on the same line (in degrees)?
  2. 2.What is the complement of 73° (in degrees)?
  3. 3.What is the supplement of 27° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One angle is 46°. What is its corresponding angle (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 52°. What is the angle next to it on the same line (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One angle is 145°. What is its corresponding angle (in degrees)?
  7. 7.Two angles are supplementary. One is 2° more than the other. What is the bigger angle (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 37°. What is its alternate interior angle (in degrees)?
  9. 9.Two parallel lines are cut by a transversal. One angle is 48°. What is its corresponding angle (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One interior angle is 150°. What is its other interior angle on the same side of the transversal (in degrees)?
  11. 11.What is the supplement of 79° (in degrees)?
  12. 12.Are 50° and 40° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  13. 13.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 69°. What is its corresponding angle (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 139°. What is the angle vertically opposite to it (in degrees)?
  16. 16.What is the supplement of 158° (in degrees)?
  17. 17.What is the supplement of 14° (in degrees)?
  18. 18.Are 17° and 163° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  19. 19.What is the supplement of 125° (in degrees)?
  20. 20.What is the supplement of 137° (in degrees)?
  21. 21.Two angles are complementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  22. 22.Two straight lines cross each other. One of the angles formed is 49°. What is the angle vertically opposite to it (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One interior angle is 51°. What is its alternate interior angle (in degrees)?
  24. 24.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)?
  25. 25.Two parallel lines are cut by a transversal. One angle is 121°. What is its corresponding angle (in degrees)?
  26. 26.What is the complement of 34° (in degrees)?
  27. 27.What is the complement of 8° (in degrees)?
  28. 28.What is the complement of 56° (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 33°. What is its other interior angle on the same side of the transversal (in degrees)?
  30. 30.What is the complement of 32° (in degrees)?
  31. 31.What is the complement of 59° (in degrees)?
  32. 32.What is the complement of 40° (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 74°. What is its alternate interior angle (in degrees)?
  34. 34.Are 78° and 102° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  35. 35.Are 44° and 46° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  36. 36.What is the supplement of 35° (in degrees)?
  37. 37.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 121°. What is its alternate interior angle (in degrees)?
  39. 39.What is the complement of 67° (in degrees)?
  40. 40.What is the complement of 26° (in degrees)?

Answer key

  1. 41
  2. 17
  3. 153
  4. 46
  5. 128
  6. 145
  7. 91
  8. 37
  9. 48
  10. 30
  11. 101
  12. Complementary
  13. 50
  14. 69
  15. 139
  16. 22
  17. 166
  18. Supplementary
  19. 55
  20. 43
  21. 72
  22. 49
  23. 51
  24. 133
  25. 121
  26. 56
  27. 82
  28. 34
  29. 147
  30. 58
  31. 31
  32. 50
  33. 74
  34. Supplementary
  35. Complementary
  36. 145
  37. 70
  38. 121
  39. 23
  40. 64

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