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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 281 · 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 10 o'clock (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 110° and 100°. What is the third angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  7. 7.An angle measures 90°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  8. 8.Two angles of a triangle are 75° and 95°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 80° and 60°. What is the third angle (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 100° and 60°. What is the third angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  14. 14.An angle measures 20°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  15. 15.Two angles of a triangle are 25° and 40°. What is the third angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 120° and 160°. What is the third angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 50° and 50°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 60° and 50°. What is the third angle (in degrees)?
  23. 23.An angle measures 35°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  24. 24.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  25. 25.An angle measures 40°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  26. 26.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 35° and 95°. What is the third angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 70° and 70°. What is the third angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 120° and 180°. What is the third angle (in degrees)?
  36. 36.An angle measures 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  37. 37.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  39. 39.An angle measures 50°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  40. 40.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?

Answer key

  1. 60
  2. 90
  3. 80
  4. 150
  5. 150
  6. 90
  7. Right
  8. 10
  9. 220
  10. 55
  11. 200
  12. 30
  13. 35
  14. Acute
  15. 115
  16. 80
  17. 40
  18. 260
  19. 100
  20. 115
  21. 90
  22. 250
  23. Acute
  24. 70
  25. Acute
  26. 15
  27. 85
  28. 50
  29. 50
  30. 20
  31. 155
  32. 220
  33. 150
  34. 180
  35. 60
  36. Straight
  37. 85
  38. 130
  39. Acute
  40. 60

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