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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 319 · 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 30° and 6° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  2. 2.What is the complement of 36° (in degrees)?
  3. 3.What is the complement of 59° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 132°. What is its other interior angle on the same side of the transversal (in degrees)?
  5. 5.Are 41° and 136° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  6. 6.What is the complement of 71° (in degrees)?
  7. 7.Two angles are supplementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  8. 8.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)?
  9. 9.What is the supplement of 150° (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 57°. What is the angle vertically opposite to it (in degrees)?
  11. 11.What is the supplement of 56° (in degrees)?
  12. 12.Are 11° and 86° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  13. 13.What is the complement of 31° (in degrees)?
  14. 14.What is the supplement of 36° (in degrees)?
  15. 15.Two parallel lines are cut by a transversal. One angle is 97°. What is its corresponding angle (in degrees)?
  16. 16.Are 75° and 15° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  17. 17.Are 24° and 66° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  18. 18.Two straight lines cross each other. One of the angles formed is 151°. What is the angle vertically opposite to it (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One interior angle is 138°. What is its alternate interior angle (in degrees)?
  20. 20.Two straight lines cross each other. One of the angles formed is 113°. What is the angle next to it on the same line (in degrees)?
  21. 21.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)?
  22. 22.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 65°. What is the angle next to it on the same line (in degrees)?
  24. 24.What is the complement of 49° (in degrees)?
  25. 25.Are 25° and 155° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  26. 26.Two straight lines cross each other. One of the angles formed is 82°. What is the angle next to it on the same line (in degrees)?
  27. 27.What is the complement of 17° (in degrees)?
  28. 28.What is the complement of 16° (in degrees)?
  29. 29.What is the complement of 46° (in degrees)?
  30. 30.Are 18° and 73° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  31. 31.Two angles are supplementary. One is 84° more than the other. What is the bigger angle (in degrees)?
  32. 32.Are 43° and 13° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  33. 33.What is the complement of 35° (in degrees)?
  34. 34.What is the complement of 47° (in degrees)?
  35. 35.What is the supplement of 26° (in degrees)?
  36. 36.Two angles are supplementary. One is 32° more than the other. What is the bigger angle (in degrees)?
  37. 37.Are 30° and 118° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  38. 38.Two parallel lines are cut by a transversal. One interior angle is 45°. What is its other interior angle on the same side of the transversal (in degrees)?
  39. 39.Two parallel lines are cut by a transversal. One angle is 61°. What is its corresponding angle (in degrees)?
  40. 40.Are 77° and 13° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary

Answer key

  1. Neither
  2. 54
  3. 31
  4. 48
  5. Neither
  6. 19
  7. 122
  8. 105
  9. 30
  10. 57
  11. 124
  12. Neither
  13. 59
  14. 144
  15. 97
  16. Complementary
  17. Complementary
  18. 151
  19. 138
  20. 67
  21. 30
  22. 57
  23. 115
  24. 41
  25. Supplementary
  26. 98
  27. 73
  28. 74
  29. 44
  30. Neither
  31. 132
  32. Neither
  33. 55
  34. 43
  35. 154
  36. 106
  37. Neither
  38. 135
  39. 61
  40. Complementary

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