← Lines and angles lesson New set →

Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 99 · 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 interior angle is 132°. What is its other interior angle on the same side of the transversal (in degrees)?
  2. 2.Two angles are complementary. One is 6° more than the other. What is the bigger angle (in degrees)?
  3. 3.Two parallel lines are cut by a transversal. One interior angle is 72°. What is its alternate interior angle (in degrees)?
  4. 4.Two straight lines cross each other. One of the angles formed is 61°. What is the angle vertically opposite to it (in degrees)?
  5. 5.What is the complement of 38° (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 73°. What is the angle vertically opposite to it (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One angle is 85°. What is its corresponding angle (in degrees)?
  8. 8.Two parallel lines are cut by a transversal. One angle is 55°. What is its corresponding angle (in degrees)?
  9. 9.Two straight lines cross each other. One of the angles formed is 121°. What is the angle next to it on the same line (in degrees)?
  10. 10.What is the supplement of 59° (in degrees)?
  11. 11.Two angles are supplementary. One is 132° more than the other. What is the bigger angle (in degrees)?
  12. 12.Two angles are complementary. One is 48° more than the other. What is the bigger angle (in degrees)?
  13. 13.What is the supplement of 40° (in degrees)?
  14. 14.Are 30° and 150° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  15. 15.Two straight lines cross each other. One of the angles formed is 139°. What is the angle vertically opposite to it (in degrees)?
  16. 16.Two straight lines cross each other. One of the angles formed is 151°. What is the angle vertically opposite to it (in degrees)?
  17. 17.Are 55° and 53° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  18. 18.Two angles are complementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 78°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One interior angle is 37°. What is its alternate interior angle (in degrees)?
  21. 21.Two parallel lines are cut by a transversal. One interior angle is 42°. What is its alternate interior angle (in degrees)?
  22. 22.What is the supplement of 58° (in degrees)?
  23. 23.What is the supplement of 127° (in degrees)?
  24. 24.Two angles are complementary. One is 62° more than the other. What is the bigger angle (in degrees)?
  25. 25.Two parallel lines are cut by a transversal. One angle is 142°. What is its corresponding angle (in degrees)?
  26. 26.What is the complement of 36° (in degrees)?
  27. 27.What is the complement of 41° (in degrees)?
  28. 28.Two angles are complementary. One is 44° more than the other. What is the bigger angle (in degrees)?
  29. 29.Two parallel lines are cut by a transversal. One interior angle is 44°. What is its alternate interior angle (in degrees)?
  30. 30.Are 22° and 68° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  31. 31.What is the supplement of 9° (in degrees)?
  32. 32.Are 80° and 100° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  33. 33.Two straight lines cross each other. One of the angles formed is 127°. What is the angle next to it on the same line (in degrees)?
  34. 34.Two straight lines cross each other. One of the angles formed is 34°. What is the angle next to it on the same line (in degrees)?
  35. 35.Two straight lines cross each other. One of the angles formed is 142°. What is the angle next to it on the same line (in degrees)?
  36. 36.Two straight lines cross each other. One of the angles formed is 119°. What is the angle next to it on the same line (in degrees)?
  37. 37.Two parallel lines are cut by a transversal. One angle is 129°. What is its corresponding angle (in degrees)?
  38. 38.What is the complement of 58° (in degrees)?
  39. 39.Two angles are complementary. One is 18° more than the other. What is the bigger angle (in degrees)?
  40. 40.Are 61° and 29° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary

Answer key

  1. 48
  2. 48
  3. 72
  4. 61
  5. 52
  6. 73
  7. 85
  8. 55
  9. 59
  10. 121
  11. 156
  12. 69
  13. 140
  14. Supplementary
  15. 139
  16. 151
  17. Neither
  18. 74
  19. 78
  20. 37
  21. 42
  22. 122
  23. 53
  24. 76
  25. 142
  26. 54
  27. 49
  28. 67
  29. 44
  30. Complementary
  31. 171
  32. Supplementary
  33. 53
  34. 146
  35. 38
  36. 61
  37. 129
  38. 32
  39. 54
  40. Complementary

Free maths worksheets lessons, practice and worksheets at talentjr.in/maths-worksheets