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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 820 · 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 144°. What is the angle vertically opposite to it (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 112°. What is the angle vertically opposite to it (in degrees)?
  3. 3.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)?
  4. 4.Are 23° and 67° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  5. 5.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)?
  6. 6.Two angles are supplementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  7. 7.What is the complement of 56° (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One interior angle is 127°. What is its alternate interior angle (in degrees)?
  9. 9.What is the complement of 54° (in degrees)?
  10. 10.Two parallel lines are cut by a transversal. One interior angle is 45°. What is its alternate interior angle (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One angle is 143°. What is its corresponding angle (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 34°. What is the angle vertically opposite to it (in degrees)?
  13. 13.Two parallel lines are cut by a transversal. One interior angle is 134°. What is its alternate interior angle (in degrees)?
  14. 14.What is the supplement of 168° (in degrees)?
  15. 15.What is the supplement of 101° (in degrees)?
  16. 16.Two angles are supplementary. One is 140° more than the other. What is the bigger angle (in degrees)?
  17. 17.Are 75° and 15° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  18. 18.Two parallel lines are cut by a transversal. One angle is 85°. What is its corresponding angle (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 34°. What is the angle next to it on the same line (in degrees)?
  20. 20.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  21. 21.What is the complement of 67° (in degrees)?
  22. 22.Two angles are complementary. One is 16° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two parallel lines are cut by a transversal. One angle is 78°. What is its corresponding angle (in degrees)?
  24. 24.What is the supplement of 120° (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 149°. What is its other interior angle on the same side of the transversal (in degrees)?
  26. 26.Two straight lines cross each other. One of the angles formed is 56°. What is the angle next to it on the same line (in degrees)?
  27. 27.What is the supplement of 145° (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 49°. What is the angle vertically opposite to it (in degrees)?
  29. 29.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 75°. What is the angle next to it on the same line (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One angle is 106°. What is its corresponding angle (in degrees)?
  32. 32.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)?
  33. 33.Are 78° and 102° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  34. 34.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  35. 35.What is the supplement of 76° (in degrees)?
  36. 36.What is the complement of 31° (in degrees)?
  37. 37.What is the complement of 64° (in degrees)?
  38. 38.Are 52° and 21° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  39. 39.Two straight lines cross each other. One of the angles formed is 150°. What is the angle vertically opposite to it (in degrees)?
  40. 40.What is the supplement of 46° (in degrees)?

Answer key

  1. 144
  2. 112
  3. 127
  4. Complementary
  5. 30
  6. 97
  7. 34
  8. 127
  9. 36
  10. 45
  11. 143
  12. 34
  13. 134
  14. 12
  15. 79
  16. 160
  17. Complementary
  18. 85
  19. 146
  20. 50
  21. 23
  22. 53
  23. 78
  24. 60
  25. 31
  26. 124
  27. 35
  28. 49
  29. 52
  30. 105
  31. 106
  32. 152
  33. Supplementary
  34. 68
  35. 104
  36. 59
  37. 26
  38. Neither
  39. 150
  40. 134

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