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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 719 · 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.Two angles of a triangle are 90° and 85°. What is the third angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  3. 3.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  4. 4.An angle measures 170°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  5. 5.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 100° and 60°. What is the third angle (in degrees)?
  7. 7.An angle measures 50°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  8. 8.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  10. 10.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  11. 11.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 60° and 180°. What is the third angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  14. 14.An angle measures 60°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  15. 15.Two angles of a triangle are 85° and 65°. What is the third angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 120° and 90°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 35° and 35°. What is the third angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  20. 20.An angle measures 70°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  21. 21.Two angles of a triangle are 30° and 125°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 20° and 155°. What is the third angle (in degrees)?
  23. 23.An angle measures 10°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  24. 24.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 40° and 50°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 120° and 160°. What is the third angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 85° and 20°. What is the third angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 120° and 50°. What is the third angle (in degrees)?
  35. 35.An angle measures 145°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  36. 36.Two angles of a triangle are 90° and 35°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  38. 38.An angle measures 35°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  39. 39.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?

Answer key

  1. 5
  2. 90
  3. Straight
  4. Obtuse
  5. 120
  6. 200
  7. Acute
  8. 85
  9. 80
  10. Right
  11. 60
  12. 120
  13. 40
  14. Acute
  15. 30
  16. 40
  17. 150
  18. 110
  19. 60
  20. Acute
  21. 25
  22. 5
  23. Acute
  24. 150
  25. 35
  26. 25
  27. 90
  28. 25
  29. 230
  30. 150
  31. 80
  32. 50
  33. 75
  34. 190
  35. Obtuse
  36. 55
  37. 145
  38. Acute
  39. 60
  40. 30

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