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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 690 · 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 99°. What is its other interior angle on the same side of the transversal (in degrees)?
  2. 2.What is the supplement of 27° (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 114°. What is the angle next to it on the same line (in degrees)?
  4. 4.What is the supplement of 87° (in degrees)?
  5. 5.What is the complement of 71° (in degrees)?
  6. 6.What is the complement of 11° (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One angle is 38°. What is its corresponding angle (in degrees)?
  8. 8.Are 10° and 47° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  9. 9.What is the complement of 15° (in degrees)?
  10. 10.What is the supplement of 64° (in degrees)?
  11. 11.What is the supplement of 161° (in degrees)?
  12. 12.What is the complement of 75° (in degrees)?
  13. 13.Are 25° and 65° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  14. 14.What is the supplement of 22° (in degrees)?
  15. 15.Are 48° and 132° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  16. 16.Are 26° and 154° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  17. 17.Two parallel lines are cut by a transversal. One interior angle is 78°. What is its other interior angle on the same side of the transversal (in degrees)?
  18. 18.Are 17° and 163° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  19. 19.What is the supplement of 86° (in degrees)?
  20. 20.Two angles are supplementary. One is 138° more than the other. What is the bigger angle (in degrees)?
  21. 21.Are 13° and 62° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  22. 22.What is the complement of 56° (in degrees)?
  23. 23.Two angles are supplementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  24. 24.What is the supplement of 150° (in degrees)?
  25. 25.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  26. 26.What is the supplement of 79° (in degrees)?
  27. 27.Two angles are complementary. One is 24° more than the other. What is the bigger angle (in degrees)?
  28. 28.Are 70° and 20° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  29. 29.Two straight lines cross each other. One of the angles formed is 123°. What is the angle vertically opposite to it (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 154°. What is the angle vertically opposite to it (in degrees)?
  31. 31.Two angles are supplementary. One is 140° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One angle is 99°. What is its corresponding angle (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 52°. What is its other interior angle on the same side of the transversal (in degrees)?
  34. 34.What is the complement of 16° (in degrees)?
  35. 35.Two angles are complementary. One is 8° more than the other. What is the bigger angle (in degrees)?
  36. 36.What is the supplement of 147° (in degrees)?
  37. 37.Two angles are supplementary. One is 128° more than the other. What is the bigger angle (in degrees)?
  38. 38.What is the complement of 49° (in degrees)?
  39. 39.What is the supplement of 71° (in degrees)?
  40. 40.Are 62° and 6° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary

Answer key

  1. 81
  2. 153
  3. 66
  4. 93
  5. 19
  6. 79
  7. 38
  8. Neither
  9. 75
  10. 116
  11. 19
  12. 15
  13. Complementary
  14. 158
  15. Supplementary
  16. Supplementary
  17. 102
  18. Supplementary
  19. 94
  20. 159
  21. Neither
  22. 34
  23. 93
  24. 30
  25. 54
  26. 101
  27. 57
  28. Complementary
  29. 123
  30. 154
  31. 160
  32. 99
  33. 128
  34. 74
  35. 49
  36. 33
  37. 154
  38. 41
  39. 109
  40. Neither

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