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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 351 · 40 sums
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The method (Know the totals): Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°. On a straight line: the two angles add up to 180°. In a triangle: the three angles add up to 180°. Around a point: 360°. Clock: each hour mark is 30° apart (360° ÷ 12).

NameDateTime takenScore ___ / 40
  1. 1.Three angles meet at a point. Two of them are 100° and 170°. What is the third angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 100° and 100°. What is the third angle (in degrees)?
  4. 4.Two angles of a triangle are 35° and 125°. What is the third angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 80° and 90°. What is the third angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  8. 8.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  9. 9.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  10. 10.An angle measures 150°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  11. 11.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  13. 13.An angle measures 155°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  14. 14.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 140° and 90°. What is the third angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  17. 17.Two angles of a triangle are 50° and 30°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  19. 19.Two angles of a triangle are 60° and 75°. What is the third angle (in degrees)?
  20. 20.Two angles of a triangle are 25° and 55°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 55° and 35°. What is the third angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  24. 24.Two angles of a triangle are 100° and 40°. What is the third angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 70° and 100°. What is the third angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 100° and 75°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  30. 30.Two angles of a triangle are 85° and 25°. What is the third angle (in degrees)?
  31. 31.Two angles of a triangle are 50° and 125°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 90° and 190°. What is the third angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 130° and 150°. What is the third angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  36. 36.An angle measures 180°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  37. 37.Two angles of a triangle are 85° and 55°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?

Answer key

  1. 90
  2. 180
  3. 160
  4. 20
  5. 190
  6. 35
  7. 15
  8. Right
  9. 70
  10. Obtuse
  11. 90
  12. 90
  13. Obtuse
  14. 115
  15. 130
  16. 55
  17. 100
  18. 155
  19. 45
  20. 100
  21. 90
  22. 120
  23. 60
  24. 40
  25. 190
  26. 55
  27. 5
  28. 30
  29. 85
  30. 70
  31. 5
  32. 80
  33. 50
  34. 80
  35. 30
  36. Straight
  37. 40
  38. 45
  39. 120
  40. 80

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