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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 154 · 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.Are 66° and 24° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  2. 2.Are 10° and 63° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  3. 3.Two parallel lines are cut by a transversal. One angle is 117°. What is its corresponding angle (in degrees)?
  4. 4.What is the complement of 80° (in degrees)?
  5. 5.What is the complement of 69° (in degrees)?
  6. 6.Two angles are supplementary. One is 98° 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 55°. What is the angle vertically opposite to it (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One angle is 52°. What is its corresponding angle (in degrees)?
  9. 9.What is the supplement of 20° (in degrees)?
  10. 10.What is the complement of 55° (in degrees)?
  11. 11.What is the complement of 12° (in degrees)?
  12. 12.Two parallel lines are cut by a transversal. One interior angle is 117°. What is its other interior angle on the same side of the transversal (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 86°. What is the angle next to it on the same line (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 35°. What is its alternate interior angle (in degrees)?
  15. 15.Two straight lines cross each other. One of the angles formed is 28°. What is the angle vertically opposite to it (in degrees)?
  16. 16.Are 66° and 64° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  17. 17.Two straight lines cross each other. One of the angles formed is 94°. What is the angle vertically opposite to it (in degrees)?
  18. 18.Two parallel lines are cut by a transversal. One interior angle is 102°. What is its alternate interior angle (in degrees)?
  19. 19.What is the supplement of 63° (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 143°. What is the angle vertically opposite to it (in degrees)?
  21. 21.Are 40° and 50° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  22. 22.Are 37° and 53° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  23. 23.What is the complement of 43° (in degrees)?
  24. 24.What is the complement of 67° (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One angle is 48°. What is its corresponding angle (in degrees)?
  26. 26.What is the supplement of 101° (in degrees)?
  27. 27.Two straight lines cross each other. One of the angles formed is 25°. What is the angle vertically opposite to it (in degrees)?
  28. 28.What is the supplement of 141° (in degrees)?
  29. 29.Are 51° and 158° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  30. 30.Two straight lines cross each other. One of the angles formed is 40°. What is the angle vertically opposite to it (in degrees)?
  31. 31.What is the complement of 83° (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One interior angle is 143°. What is its alternate interior angle (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 50°. What is its other interior angle on the same side of the transversal (in degrees)?
  34. 34.What is the supplement of 16° (in degrees)?
  35. 35.What is the complement of 5° (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 26°. What is the angle vertically opposite to it (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One interior angle is 111°. What is its alternate interior angle (in degrees)?
  38. 38.What is the complement of 51° (in degrees)?
  39. 39.What is the complement of 84° (in degrees)?
  40. 40.Two parallel lines are cut by a transversal. One interior angle is 43°. What is its alternate interior angle (in degrees)?

Answer key

  1. Complementary
  2. Neither
  3. 117
  4. 10
  5. 21
  6. 139
  7. 55
  8. 52
  9. 160
  10. 35
  11. 78
  12. 63
  13. 94
  14. 35
  15. 28
  16. Neither
  17. 94
  18. 102
  19. 117
  20. 143
  21. Complementary
  22. Complementary
  23. 47
  24. 23
  25. 48
  26. 79
  27. 25
  28. 39
  29. Neither
  30. 40
  31. 7
  32. 143
  33. 130
  34. 164
  35. 85
  36. 26
  37. 111
  38. 39
  39. 6
  40. 43

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