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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 306 · 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.Three angles meet at a point. Two of them are 120° and 70°. What is the third angle (in degrees)?
  3. 3.An angle measures 180°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  4. 4.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 50° and 150°. What is the third angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  7. 7.An angle measures 85°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  8. 8.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 110° and 190°. What is the third angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 50° and 220°. What is the third angle (in degrees)?
  12. 12.Two angles of a triangle are 80° and 90°. What is the third angle (in degrees)?
  13. 13.An angle measures 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  14. 14.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 30° and 125°. What is the third angle (in degrees)?
  19. 19.Two angles of a triangle are 90° and 25°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 140° and 50°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 20° and 155°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  26. 26.An angle measures 100°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  27. 27.Two angles of a triangle are 50° and 110°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 80° and 20°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 80° and 140°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 110° and 100°. What is the third angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 25° and 95°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 60° and 55°. What is the third angle (in degrees)?
  37. 37.A right angle is split into two angles. 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 50°. What is the other angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 55° and 60°. What is the third angle (in degrees)?

Answer key

  1. 30
  2. 170
  3. Straight
  4. 20
  5. 160
  6. 60
  7. Acute
  8. 30
  9. 150
  10. 60
  11. 90
  12. 10
  13. Right
  14. 20
  15. 180
  16. 90
  17. 55
  18. 25
  19. 65
  20. 85
  21. 15
  22. 170
  23. 160
  24. 5
  25. 120
  26. Obtuse
  27. 20
  28. 110
  29. 80
  30. 140
  31. 60
  32. 60
  33. 150
  34. 155
  35. 60
  36. 65
  37. 5
  38. 130
  39. 50
  40. 65

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