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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 297 · 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 angles are complementary. One is 30° more than the other. What is the bigger angle (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One angle is 94°. What is its corresponding angle (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One interior angle is 125°. What is its alternate interior angle (in degrees)?
  4. 4.Are 34° and 146° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  5. 5.Two parallel lines are cut by a transversal. One angle is 44°. What is its corresponding angle (in degrees)?
  6. 6.Two parallel lines are cut by a transversal. One angle is 51°. What is its corresponding angle (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 27°. What is the angle next to it on the same line (in degrees)?
  8. 8.Two straight lines cross each other. One of the angles formed is 96°. What is the angle vertically opposite to it (in degrees)?
  9. 9.What is the complement of 73° (in degrees)?
  10. 10.Two straight lines cross each other. One of the angles formed is 108°. What is the angle vertically opposite to it (in degrees)?
  11. 11.What is the complement of 8° (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 129°. What is the angle vertically opposite to it (in degrees)?
  13. 13.What is the complement of 22° (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 45°. What is its alternate interior angle (in degrees)?
  15. 15.What is the supplement of 90° (in degrees)?
  16. 16.Two parallel lines are cut by a transversal. One interior angle is 127°. What is its alternate interior angle (in degrees)?
  17. 17.What is the complement of 76° (in degrees)?
  18. 18.Two straight lines cross each other. One of the angles formed is 95°. What is the angle next to it on the same line (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 50°. What is the angle next to it on the same line (in degrees)?
  20. 20.Are 54° and 126° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  21. 21.Two parallel lines are cut by a transversal. One angle is 56°. What is its corresponding angle (in degrees)?
  22. 22.What is the supplement of 121° (in degrees)?
  23. 23.What is the supplement of 20° (in degrees)?
  24. 24.Are 29° and 151° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  25. 25.What is the supplement of 87° (in degrees)?
  26. 26.Are 18° and 162° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  27. 27.Are 22° and 158° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  28. 28.Two straight lines cross each other. One of the angles formed is 22°. What is the angle vertically opposite to it (in degrees)?
  29. 29.What is the supplement of 94° (in degrees)?
  30. 30.Two straight lines cross each other. One of the angles formed is 118°. What is the angle vertically opposite to it (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 151°. What is the angle next to it on the same line (in degrees)?
  32. 32.What is the supplement of 9° (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One angle is 81°. What is its corresponding angle (in degrees)?
  34. 34.What is the complement of 6° (in degrees)?
  35. 35.What is the complement of 85° (in degrees)?
  36. 36.Two parallel lines are cut by a transversal. One angle is 84°. What is its corresponding angle (in degrees)?
  37. 37.What is the complement of 62° (in degrees)?
  38. 38.Two parallel lines are cut by a transversal. One angle is 118°. What is its corresponding angle (in degrees)?
  39. 39.What is the supplement of 135° (in degrees)?
  40. 40.What is the supplement of 16° (in degrees)?

Answer key

  1. 60
  2. 94
  3. 125
  4. Supplementary
  5. 44
  6. 51
  7. 153
  8. 96
  9. 17
  10. 108
  11. 82
  12. 129
  13. 68
  14. 45
  15. 90
  16. 127
  17. 14
  18. 85
  19. 130
  20. Supplementary
  21. 56
  22. 59
  23. 160
  24. Supplementary
  25. 93
  26. Supplementary
  27. Supplementary
  28. 22
  29. 86
  30. 118
  31. 29
  32. 171
  33. 81
  34. 84
  35. 5
  36. 84
  37. 28
  38. 118
  39. 45
  40. 164

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