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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 811 · 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 straight lines cross each other. One of the angles formed is 145°. What is the angle next to it on the same line (in degrees)?
  2. 2.Two parallel lines are cut by a transversal. One angle is 90°. What is its corresponding angle (in degrees)?
  3. 3.What is the complement of 9° (in degrees)?
  4. 4.Two angles are complementary. One is 46° more than the other. What is the bigger angle (in degrees)?
  5. 5.Are 25° and 80° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  6. 6.What is the supplement of 124° (in degrees)?
  7. 7.Two straight lines cross each other. One of the angles formed is 29°. What is the angle next to it on the same line (in degrees)?
  8. 8.Two angles are supplementary. One is 68° more than the other. What is the bigger angle (in degrees)?
  9. 9.What is the supplement of 161° (in degrees)?
  10. 10.Two angles are complementary. One is 14° more than the other. What is the bigger angle (in degrees)?
  11. 11.Two parallel lines are cut by a transversal. One angle is 102°. What is its corresponding angle (in degrees)?
  12. 12.Two straight lines cross each other. One of the angles formed is 56°. What is the angle next to it on the same line (in degrees)?
  13. 13.Two straight lines cross each other. One of the angles formed is 131°. What is the angle next to it on the same line (in degrees)?
  14. 14.Two parallel lines are cut by a transversal. One interior angle is 30°. What is its other interior angle on the same side of the transversal (in degrees)?
  15. 15.What is the supplement of 173° (in degrees)?
  16. 16.What is the complement of 65° (in degrees)?
  17. 17.Two straight lines cross each other. One of the angles formed is 132°. What is the angle vertically opposite to it (in degrees)?
  18. 18.What is the supplement of 24° (in degrees)?
  19. 19.Are 78° and 12° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  20. 20.Are 69° and 21° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  21. 21.What is the supplement of 37° (in degrees)?
  22. 22.Two angles are complementary. One is 70° more than the other. What is the bigger angle (in degrees)?
  23. 23.Two angles are supplementary. One is 122° more than the other. What is the bigger angle (in degrees)?
  24. 24.Two parallel lines are cut by a transversal. One interior angle is 47°. What is its other interior angle on the same side of the transversal (in degrees)?
  25. 25.What is the supplement of 131° (in degrees)?
  26. 26.Two angles are supplementary. One is 134° more than the other. What is the bigger angle (in degrees)?
  27. 27.Two angles are complementary. One is 66° more than the other. What is the bigger angle (in degrees)?
  28. 28.Two angles are supplementary. One is 4° more than the other. What is the bigger angle (in degrees)?
  29. 29.What is the complement of 55° (in degrees)?
  30. 30.What is the complement of 41° (in degrees)?
  31. 31.Two straight lines cross each other. One of the angles formed is 112°. What is the angle next to it on the same line (in degrees)?
  32. 32.Are 42° and 48° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  33. 33.What is the supplement of 132° (in degrees)?
  34. 34.What is the complement of 49° (in degrees)?
  35. 35.What is the complement of 84° (in degrees)?
  36. 36.What is the supplement of 159° (in degrees)?
  37. 37.What is the complement of 10° (in degrees)?
  38. 38.Are 69° and 64° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  39. 39.What is the supplement of 158° (in degrees)?
  40. 40.Two angles are supplementary. One is 16° more than the other. What is the bigger angle (in degrees)?

Answer key

  1. 35
  2. 90
  3. 81
  4. 68
  5. Neither
  6. 56
  7. 151
  8. 124
  9. 19
  10. 52
  11. 102
  12. 124
  13. 49
  14. 150
  15. 7
  16. 25
  17. 132
  18. 156
  19. Complementary
  20. Complementary
  21. 143
  22. 80
  23. 151
  24. 133
  25. 49
  26. 157
  27. 78
  28. 92
  29. 35
  30. 49
  31. 68
  32. Complementary
  33. 48
  34. 41
  35. 6
  36. 21
  37. 80
  38. Neither
  39. 22
  40. 98

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