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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 437 · 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 2 o'clock (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  3. 3.Two angles of a triangle are 60° and 105°. What is the third angle (in degrees)?
  4. 4.Two angles of a triangle are 60° and 35°. What is the third angle (in degrees)?
  5. 5.An angle measures 110°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  6. 6.Three angles meet at a point. Two of them are 120° and 60°. What is the third angle (in degrees)?
  7. 7.Two angles of a triangle are 30° and 125°. What is the third angle (in degrees)?
  8. 8.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  9. 9.Two angles of a triangle are 40° and 75°. What is the third angle (in degrees)?
  10. 10.Two angles of a triangle are 50° and 40°. What is the third angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 110° and 190°. What is the third angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 150° and 110°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  21. 21.An angle measures 70°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  22. 22.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 80° and 150°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 75° and 50°. What is the third angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 25° and 25°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 150° and 50°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 140° and 90°. What is the third angle (in degrees)?
  34. 34.An angle measures 30°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  35. 35.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  36. 36.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  37. 37.Two angles of a triangle are 45° and 85°. What is the third angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 50° and 180°. What is the third angle (in degrees)?

Answer key

  1. 60
  2. 120
  3. 15
  4. 85
  5. Obtuse
  6. 180
  7. 25
  8. Straight
  9. 65
  10. 90
  11. 60
  12. 25
  13. 160
  14. 75
  15. 15
  16. 20
  17. 30
  18. 100
  19. 170
  20. 150
  21. Acute
  22. 70
  23. 130
  24. 55
  25. 35
  26. 115
  27. 10
  28. 30
  29. 120
  30. 40
  31. 130
  32. 160
  33. 130
  34. Acute
  35. Right
  36. 150
  37. 50
  38. 90
  39. 130
  40. 130

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