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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 236 · 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.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  2. 2.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  3. 3.Two angles of a triangle are 45° and 25°. What is the third angle (in degrees)?
  4. 4.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  5. 5.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 140° and 140°. 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.An angle measures 165°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  10. 10.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 150° and 120°. What is the third angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 60° and 50°. What is the third angle (in degrees)?
  14. 14.An angle measures 60°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  15. 15.Three angles meet at a point. Two of them are 140° and 160°. What is the third angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  24. 24.Two angles of a triangle are 40° and 60°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 55° and 40°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 80° and 140°. What is the third angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 130° and 90°. What is the third angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 90° and 80°. What is the third angle (in degrees)?
  33. 33.An angle measures 155°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  34. 34.Two angles of a triangle are 70° and 75°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  36. 36.Two angles of a triangle are 90° and 50°. What is the third angle (in degrees)?
  37. 37.An angle measures 105°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  38. 38.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  39. 39.An angle measures 115°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  40. 40.Two angles of a triangle are 80° and 65°. What is the third angle (in degrees)?

Answer key

  1. Right
  2. 120
  3. 110
  4. Straight
  5. 60
  6. 60
  7. 80
  8. 150
  9. Obtuse
  10. 65
  11. 90
  12. 120
  13. 70
  14. Acute
  15. 60
  16. 140
  17. 15
  18. 65
  19. 25
  20. 60
  21. 80
  22. 20
  23. 30
  24. 80
  25. 95
  26. 160
  27. 85
  28. 140
  29. 180
  30. 140
  31. 90
  32. 190
  33. Obtuse
  34. 35
  35. 40
  36. 40
  37. Obtuse
  38. 55
  39. Obtuse
  40. 35

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