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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 384 · 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 15°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  2. 2.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 70° and 150°. What is the third angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 50° and 80°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 100° and 110°. What is the third angle (in degrees)?
  11. 11.An angle measures 40°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  12. 12.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 50° and 90°. What is the third angle (in degrees)?
  15. 15.Two angles of a triangle are 85° and 35°. What is the third angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 90° and 20°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 80° and 80°. What is the third angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 70° and 230°. What is the third angle (in degrees)?
  25. 25.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  26. 26.Two angles of a triangle are 55° and 100°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 95° and 25°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 50° and 65°. 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.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  33. 33.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 60° and 65°. What is the third angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  38. 38.Two angles of a triangle are 90° and 55°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 90° and 65°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?

Answer key

  1. Acute
  2. 60
  3. 140
  4. 75
  5. 120
  6. 80
  7. 60
  8. 50
  9. 230
  10. 150
  11. Acute
  12. 90
  13. 10
  14. 220
  15. 60
  16. 80
  17. 145
  18. 70
  19. 120
  20. 140
  21. 150
  22. 65
  23. 200
  24. 60
  25. Right
  26. 25
  27. 65
  28. 30
  29. 60
  30. 65
  31. 15
  32. Straight
  33. 95
  34. 55
  35. 70
  36. 30
  37. 20
  38. 35
  39. 25
  40. 180

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