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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 562 · 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.Three angles meet at a point. Two of them are 120° and 90°. What is the third angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 130° and 120°. What is the third angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 130° and 160°. What is the third angle (in degrees)?
  6. 6.Two angles of a triangle are 45° and 45°. What is the third angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  8. 8.Two angles of a triangle are 60° and 45°. What is the third angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  11. 11.An angle measures 175°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  12. 12.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  14. 14.Two angles of a triangle are 50° and 85°. What is the third angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  17. 17.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  18. 18.Three angles meet at a point. Two of them are 120° and 170°. What is the third angle (in degrees)?
  19. 19.An angle measures 10°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  20. 20.Three angles meet at a point. Two of them are 50° and 190°. What is the third angle (in degrees)?
  21. 21.An angle measures 95°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  22. 22.Three angles meet at a point. Two of them are 70° and 50°. What is the third angle (in degrees)?
  23. 23.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  24. 24.Three angles meet at a point. Two of them are 50° and 140°. What is the third angle (in degrees)?
  25. 25.An angle measures 50°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  26. 26.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 65° and 70°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  29. 29.An angle measures 110°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  30. 30.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 140° and 140°. What is the third angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  34. 34.An angle measures 25°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  35. 35.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  37. 37.An angle measures 60°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  38. 38.Two angles of a triangle are 95° and 30°. What is the third angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  40. 40.Two angles of a triangle are 25° and 145°. What is the third angle (in degrees)?

Answer key

  1. 150
  2. 110
  3. 30
  4. 135
  5. 70
  6. 90
  7. 75
  8. 75
  9. 170
  10. 10
  11. Obtuse
  12. 150
  13. 120
  14. 45
  15. 80
  16. 85
  17. Straight
  18. 70
  19. Acute
  20. 120
  21. Obtuse
  22. 240
  23. Right
  24. 170
  25. Acute
  26. 30
  27. 45
  28. 160
  29. Obtuse
  30. 35
  31. 80
  32. 65
  33. 45
  34. Acute
  35. 100
  36. 40
  37. Acute
  38. 55
  39. 90
  40. 10

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