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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 197 · 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 complement of 45° (in degrees)?
  2. 2.What is the complement of 18° (in degrees)?
  3. 3.What is the supplement of 107° (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 43°. What is its alternate interior angle (in degrees)?
  5. 5.Two angles are supplementary. One is 132° more than the other. What is the bigger angle (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 149°. What is the angle next to it on the same line (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One angle is 50°. What is its corresponding angle (in degrees)?
  8. 8.What is the complement of 72° (in degrees)?
  9. 9.What is the complement of 5° (in degrees)?
  10. 10.What is the supplement of 53° (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One interior angle is 105°. What is its alternate interior angle (in degrees)?
  12. 12.Two angles are supplementary. One is 136° more than the other. What is the bigger angle (in degrees)?
  13. 13.What is the complement of 74° (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One angle is 137°. What is its corresponding angle (in degrees)?
  15. 15.Are 26° and 143° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  16. 16.What is the supplement of 52° (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 148°. What is the angle next to it on the same line (in degrees)?
  18. 18.What is the supplement of 85° (in degrees)?
  19. 19.Are 59° and 121° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  20. 20.Two straight lines cross each other. One of the angles formed is 53°. What is the angle vertically opposite to it (in degrees)?
  21. 21.Two straight lines cross each other. One of the angles formed is 57°. What is the angle next to it on the same line (in degrees)?
  22. 22.What is the complement of 54° (in degrees)?
  23. 23.What is the complement of 51° (in degrees)?
  24. 24.Are 79° and 11° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  25. 25.What is the complement of 68° (in degrees)?
  26. 26.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  27. 27.What is the supplement of 37° (in degrees)?
  28. 28.Are 73° and 107° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  29. 29.What is the supplement of 135° (in degrees)?
  30. 30.Two angles are supplementary. One is 84° more than the other. What is the bigger angle (in degrees)?
  31. 31.What is the complement of 12° (in degrees)?
  32. 32.Two angles are complementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 97°. What is its alternate interior angle (in degrees)?
  34. 34.What is the supplement of 87° (in degrees)?
  35. 35.What is the complement of 61° (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 101°. What is the angle vertically opposite to it (in degrees)?
  37. 37.Are 39° and 75° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  38. 38.Are 18° and 72° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  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.Two straight lines cross each other. One of the angles formed is 20°. What is the angle next to it on the same line (in degrees)?

Answer key

  1. 45
  2. 72
  3. 73
  4. 43
  5. 156
  6. 31
  7. 50
  8. 18
  9. 85
  10. 127
  11. 105
  12. 158
  13. 16
  14. 137
  15. Neither
  16. 128
  17. 32
  18. 95
  19. Supplementary
  20. 53
  21. 123
  22. 36
  23. 39
  24. Complementary
  25. 22
  26. 48
  27. 143
  28. Supplementary
  29. 45
  30. 132
  31. 78
  32. 47
  33. 97
  34. 93
  35. 29
  36. 101
  37. Neither
  38. Complementary
  39. 150
  40. 160

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