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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 214 · 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 100°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  2. 2.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 100° and 190°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 80° and 60°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 75° and 60°. What is the third angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 110° and 60°. What is the third angle (in degrees)?
  11. 11.An angle measures 125°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  12. 12.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  17. 17.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  18. 18.An angle measures 80°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  19. 19.Three angles meet at a point. Two of them are 70° and 160°. What is the third angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 140° and 150°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 65° and 110°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  23. 23.Two angles of a triangle are 85° and 55°. What is the third angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 60° and 110°. What is the third angle (in degrees)?
  25. 25.Two angles of a triangle are 50° and 60°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 65° and 45°. What is the third angle (in degrees)?
  27. 27.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  28. 28.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 70° and 25°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 110° and 150°. What is the third angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  34. 34.Two angles of a triangle are 35° and 40°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 65° and 75°. What is the third angle (in degrees)?
  36. 36.An angle measures 150°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  37. 37.Two angles of a triangle are 90° and 20°. What is the third angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 100° and 25°. What is the third angle (in degrees)?

Answer key

  1. Obtuse
  2. 90
  3. 120
  4. 30
  5. 160
  6. 70
  7. 220
  8. 45
  9. 120
  10. 190
  11. Obtuse
  12. 150
  13. 55
  14. 85
  15. 135
  16. 60
  17. Straight
  18. Acute
  19. 130
  20. 70
  21. 5
  22. 85
  23. 40
  24. 190
  25. 70
  26. 70
  27. Right
  28. 40
  29. 85
  30. 100
  31. 15
  32. 50
  33. 60
  34. 105
  35. 40
  36. Obtuse
  37. 70
  38. 180
  39. 60
  40. 55

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