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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 415 · 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 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  2. 2.Three angles meet at a point. Two of them are 60° and 60°. What is the third angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  4. 4.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  5. 5.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 70° and 90°. What is the third angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  9. 9.Two angles of a triangle are 70° and 35°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 50° and 210°. What is the third angle (in degrees)?
  11. 11.Three angles meet at a point. Two of them are 50° and 150°. What is the third angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 100° and 190°. What is the third angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 60° and 50°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 25° and 30°. What is the third angle (in degrees)?
  23. 23.Two angles of a triangle are 35° and 20°. What is the third angle (in degrees)?
  24. 24.An angle measures 55°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  25. 25.Two angles of a triangle are 70° and 75°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 80° and 20°. What is the third angle (in degrees)?
  27. 27.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 100° and 55°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 50° and 170°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 60° and 80°. What is the third angle (in degrees)?
  32. 32.An angle measures 85°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  33. 33.An angle measures 160°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  34. 34.Two angles of a triangle are 50° and 100°. What is the third angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?

Answer key

  1. Right
  2. 240
  3. 160
  4. Straight
  5. 90
  6. 20
  7. 200
  8. 80
  9. 75
  10. 100
  11. 160
  12. 15
  13. 70
  14. 70
  15. 60
  16. 30
  17. 50
  18. 30
  19. 90
  20. 5
  21. 250
  22. 125
  23. 125
  24. Acute
  25. 35
  26. 80
  27. 90
  28. 75
  29. 25
  30. 140
  31. 220
  32. Acute
  33. Obtuse
  34. 30
  35. 180
  36. 155
  37. 230
  38. 115
  39. 150
  40. 55

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