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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 820 · 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 45°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  2. 2.An angle measures 85°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  3. 3.What is the smaller angle between the hands of a clock at 3 o'clock (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.Three angles meet at a point. Two of them are 50° and 160°. What is the third angle (in degrees)?
  6. 6.Two angles of a triangle are 20° and 35°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 50° and 170°. What is the third angle (in degrees)?
  8. 8.An angle measures 100°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  9. 9.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 60° and 60°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  14. 14.Two angles of a triangle are 95° and 20°. What is the third angle (in degrees)?
  15. 15.An angle measures 165°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  16. 16.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  19. 19.Two angles of a triangle are 60° and 105°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 120° and 140°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  26. 26.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  27. 27.Three angles meet at a point. Two of them are 110° and 70°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 90° and 65°. What is the third angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  30. 30.Two angles of a triangle are 80° and 60°. What is the third angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  32. 32.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  33. 33.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 90° and 50°. What is the third angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 65° and 95°. What is the third angle (in degrees)?

Answer key

  1. Acute
  2. Acute
  3. 90
  4. 75
  5. 150
  6. 125
  7. 140
  8. Obtuse
  9. 115
  10. 240
  11. 150
  12. 30
  13. 35
  14. 65
  15. Obtuse
  16. 85
  17. 90
  18. 120
  19. 15
  20. 125
  21. 90
  22. 35
  23. 100
  24. 15
  25. 75
  26. Straight
  27. 180
  28. 25
  29. 60
  30. 40
  31. 55
  32. Right
  33. 25
  34. 30
  35. 220
  36. 10
  37. 200
  38. 65
  39. 40
  40. 20

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