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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 37 · 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 130°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  2. 2.Three angles meet at a point. Two of them are 140° and 100°. What is the third angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  4. 4.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  5. 5.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 60° and 80°. What is the third angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 110° and 160°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 50° and 70°. What is the third angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 60° and 150°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 110° and 80°. What is the third angle (in degrees)?
  17. 17.An angle measures 60°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  18. 18.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 35° and 50°. What is the third angle (in degrees)?
  21. 21.An angle measures 165°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  22. 22.Three angles meet at a point. Two of them are 70° and 130°. What is the third angle (in degrees)?
  23. 23.An angle measures 30°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  24. 24.Two angles of a triangle are 95° and 70°. What is the third angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 70° and 210°. What is the third angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  27. 27.An angle measures 25°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  28. 28.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  29. 29.An angle measures 80°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  30. 30.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  31. 31.An angle measures 150°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  32. 32.Two angles of a triangle are 40° and 75°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 50° and 80°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 140° and 130°. What is the third angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 40° and 55°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?

Answer key

  1. Obtuse
  2. 120
  3. 25
  4. Right
  5. 55
  6. 220
  7. 35
  8. 90
  9. 240
  10. 60
  11. 160
  12. 150
  13. 60
  14. 30
  15. 105
  16. 170
  17. Acute
  18. 75
  19. 165
  20. 95
  21. Obtuse
  22. 160
  23. Acute
  24. 15
  25. 80
  26. 10
  27. Acute
  28. 130
  29. Acute
  30. 30
  31. Obtuse
  32. 65
  33. 20
  34. 230
  35. 90
  36. 20
  37. 60
  38. 155
  39. 85
  40. 60

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