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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 444 · 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.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 140° and 90°. What is the third angle (in degrees)?
  3. 3.Two angles of a triangle are 60° and 40°. What is the third angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  5. 5.An angle measures 35°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  6. 6.Three angles meet at a point. Two of them are 60° and 50°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 90° and 200°. What is the third angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  11. 11.An angle measures 180°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  12. 12.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  13. 13.An angle measures 95°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  14. 14.An angle measures 10°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  15. 15.Three angles meet at a point. Two of them are 60° and 90°. What is the third angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 50° and 200°. What is the third angle (in degrees)?
  18. 18.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  19. 19.Three angles meet at a point. Two of them are 100° and 140°. What is the third angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  23. 23.Two angles of a triangle are 85° and 20°. What is the third angle (in degrees)?
  24. 24.An angle measures 30°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  25. 25.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  26. 26.Two angles of a triangle are 55° and 50°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 30° and 95°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 85° and 85°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 140° and 50°. What is the third angle (in degrees)?
  32. 32.An angle measures 55°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  33. 33.Three angles meet at a point. Two of them are 120° and 150°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 50° and 80°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 45° and 95°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 35° and 40°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 75° and 75°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 120° and 80°. What is the third angle (in degrees)?

Answer key

  1. 30
  2. 130
  3. 80
  4. 15
  5. Acute
  6. 250
  7. 70
  8. 150
  9. 30
  10. 40
  11. Straight
  12. 40
  13. Obtuse
  14. Acute
  15. 210
  16. 30
  17. 110
  18. Right
  19. 120
  20. 50
  21. 60
  22. 90
  23. 75
  24. Acute
  25. 90
  26. 75
  27. 55
  28. 10
  29. 35
  30. 50
  31. 170
  32. Acute
  33. 90
  34. 50
  35. 40
  36. 105
  37. 30
  38. 55
  39. 150
  40. 160

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