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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 265 · 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 angle is 71°. What is its corresponding angle (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 132°. What is the angle vertically opposite to it (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 40°. What is the angle next to it on the same line (in degrees)?
  4. 4.Are 16° and 21° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  5. 5.Two parallel lines are cut by a transversal. One angle is 136°. What is its corresponding angle (in degrees)?
  6. 6.What is the supplement of 143° (in degrees)?
  7. 7.What is the complement of 63° (in degrees)?
  8. 8.What is the supplement of 86° (in degrees)?
  9. 9.What is the supplement of 8° (in degrees)?
  10. 10.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)?
  11. 11.What is the supplement of 37° (in degrees)?
  12. 12.What is the complement of 25° (in degrees)?
  13. 13.What is the complement of 56° (in degrees)?
  14. 14.What is the supplement of 120° (in degrees)?
  15. 15.Two angles are supplementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  16. 16.Are 43° and 137° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  17. 17.Are 17° and 163° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  18. 18.Two parallel lines are cut by a transversal. One angle is 127°. What is its corresponding angle (in degrees)?
  19. 19.Two parallel lines are cut by a transversal. One angle is 72°. What is its corresponding angle (in degrees)?
  20. 20.What is the complement of 77° (in degrees)?
  21. 21.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  22. 22.Two parallel lines are cut by a transversal. One angle is 90°. What is its corresponding angle (in degrees)?
  23. 23.Two straight lines cross each other. One of the angles formed is 56°. What is the angle vertically opposite to it (in degrees)?
  24. 24.Two angles are supplementary. One is 124° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One angle is 124°. What is its corresponding angle (in degrees)?
  26. 26.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  27. 27.Two parallel lines are cut by a transversal. One interior angle is 48°. What is its other interior angle on the same side of the transversal (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 50°. What is the angle vertically opposite to it (in degrees)?
  29. 29.What is the complement of 34° (in degrees)?
  30. 30.Two angles are supplementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  31. 31.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One angle is 129°. What is its corresponding angle (in degrees)?
  33. 33.Two parallel lines are cut by a transversal. One interior angle is 61°. What is its alternate interior angle (in degrees)?
  34. 34.Are 79° and 101° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  35. 35.Two parallel lines are cut by a transversal. One interior angle is 51°. What is its other interior angle on the same side of the transversal (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 73°. What is the angle next to it on the same line (in degrees)?
  37. 37.What is the supplement of 34° (in degrees)?
  38. 38.Are 51° and 129° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  39. 39.What is the supplement of 90° (in degrees)?
  40. 40.Two straight lines cross each other. One of the angles formed is 96°. What is the angle vertically opposite to it (in degrees)?

Answer key

  1. 71
  2. 132
  3. 140
  4. Neither
  5. 136
  6. 37
  7. 27
  8. 94
  9. 172
  10. 160
  11. 143
  12. 65
  13. 34
  14. 60
  15. 92
  16. Supplementary
  17. Supplementary
  18. 127
  19. 72
  20. 13
  21. 76
  22. 90
  23. 56
  24. 152
  25. 124
  26. 54
  27. 132
  28. 50
  29. 56
  30. 120
  31. 80
  32. 129
  33. 61
  34. Supplementary
  35. 129
  36. 107
  37. 146
  38. Supplementary
  39. 90
  40. 96

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