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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 339 · 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.What is the supplement of 136° (in degrees)?
  2. 2.What is the complement of 10° (in degrees)?
  3. 3.What is the complement of 40° (in degrees)?
  4. 4.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  5. 5.What is the complement of 59° (in degrees)?
  6. 6.Are 43° and 28° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  7. 7.Two straight lines cross each other. One of the angles formed is 37°. What is the angle vertically opposite to it (in degrees)?
  8. 8.What is the supplement of 113° (in degrees)?
  9. 9.Two parallel lines are cut by a transversal. One interior angle is 32°. What is its other interior angle on the same side of the transversal (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 124°. What is the angle vertically opposite to it (in degrees)?
  11. 11.Are 52° and 119° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  12. 12.What is the complement of 26° (in degrees)?
  13. 13.What is the complement of 56° (in degrees)?
  14. 14.Are 15° and 65° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  15. 15.What is the supplement of 24° (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One angle is 126°. What is its corresponding angle (in degrees)?
  17. 17.What is the supplement of 111° (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 70°. What is the angle vertically opposite to it (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 24°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Are 74° and 16° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  21. 21.Two straight lines cross each other. One of the angles formed is 66°. What is the angle next to it on the same line (in degrees)?
  22. 22.What is the complement of 65° (in degrees)?
  23. 23.Are 77° and 102° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  24. 24.What is the supplement of 76° (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One interior angle is 108°. What is its alternate interior angle (in degrees)?
  26. 26.What is the supplement of 52° (in degrees)?
  27. 27.What is the complement of 12° (in degrees)?
  28. 28.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  29. 29.What is the supplement of 166° (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 103°. What is the angle vertically opposite to it (in degrees)?
  31. 31.Two parallel lines are cut by a transversal. One angle is 61°. What is its corresponding angle (in degrees)?
  32. 32.Are 13° and 167° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  33. 33.Are 49° and 41° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  34. 34.Two parallel lines are cut by a transversal. One interior angle is 143°. What is its other interior angle on the same side of the transversal (in degrees)?
  35. 35.Two angles are supplementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One angle is 137°. What is its corresponding angle (in degrees)?
  37. 37.What is the supplement of 162° (in degrees)?
  38. 38.Are 46° and 134° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  39. 39.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  40. 40.What is the supplement of 9° (in degrees)?

Answer key

  1. 44
  2. 80
  3. 50
  4. 50
  5. 31
  6. Neither
  7. 37
  8. 67
  9. 148
  10. 124
  11. Neither
  12. 64
  13. 34
  14. Neither
  15. 156
  16. 126
  17. 69
  18. 70
  19. 24
  20. Complementary
  21. 114
  22. 25
  23. Neither
  24. 104
  25. 108
  26. 128
  27. 78
  28. 73
  29. 14
  30. 103
  31. 61
  32. Supplementary
  33. Complementary
  34. 37
  35. 123
  36. 137
  37. 18
  38. Supplementary
  39. 67
  40. 171

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