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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 140 · 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.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  5. 5.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  6. 6.Two angles of a triangle are 80° and 30°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 80° and 80°. What is the third angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 130° and 90°. What is the third angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  10. 10.An angle measures 105°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  11. 11.Two angles of a triangle are 95° and 80°. What is the third angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 90° and 110°. What is the third angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  17. 17.Two angles of a triangle are 25° and 20°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  20. 20.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  21. 21.Three angles meet at a point. Two of them are 100° and 120°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 110° and 150°. What is the third angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 140° and 50°. What is the third angle (in degrees)?
  26. 26.An angle measures 50°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  27. 27.An angle measures 130°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  28. 28.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 70° and 60°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 70° and 120°. What is the third angle (in degrees)?
  33. 33.An angle measures 25°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  34. 34.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 35° and 140°. What is the third angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 85°. What is the other 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.An angle measures 115°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  40. 40.Three angles meet at a point. Two of them are 70° and 210°. What is the third angle (in degrees)?

Answer key

  1. 30
  2. 90
  3. 70
  4. 30
  5. Straight
  6. 70
  7. 200
  8. 140
  9. 90
  10. Obtuse
  11. 5
  12. 90
  13. 160
  14. 120
  15. 60
  16. 170
  17. 135
  18. 30
  19. 60
  20. Right
  21. 140
  22. 100
  23. 180
  24. 20
  25. 170
  26. Acute
  27. Obtuse
  28. 150
  29. 135
  30. 40
  31. 230
  32. 170
  33. Acute
  34. 55
  35. 5
  36. 55
  37. 95
  38. 45
  39. Obtuse
  40. 80

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