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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 254 · 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.Two angles of a triangle are 60° and 30°. What is the third angle (in degrees)?
  2. 2.An angle measures 35°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  3. 3.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 120° and 90°. What is the third angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  7. 7.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  8. 8.An angle measures 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  9. 9.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 60° and 100°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  12. 12.An angle measures 95°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  13. 13.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 50° and 70°. What is the third angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 120° and 110°. What is the third angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 50° and 50°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 90° and 200°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 60° and 130°. What is the third angle (in degrees)?
  29. 29.An angle measures 50°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  30. 30.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 50° and 130°. What is the third angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  33. 33.An angle measures 70°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  34. 34.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 50° and 200°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 140° and 90°. What is the third angle (in degrees)?

Answer key

  1. 90
  2. Acute
  3. 30
  4. 150
  5. 150
  6. 35
  7. Straight
  8. Right
  9. 30
  10. 200
  11. 150
  12. Obtuse
  13. 60
  14. 10
  15. 240
  16. 170
  17. 110
  18. 75
  19. 130
  20. 90
  21. 65
  22. 20
  23. 160
  24. 55
  25. 260
  26. 50
  27. 70
  28. 170
  29. Acute
  30. 65
  31. 180
  32. 80
  33. Acute
  34. 25
  35. 50
  36. 5
  37. 75
  38. 45
  39. 110
  40. 130

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