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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 270 · 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 110° and 180°. What is the third angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  4. 4.An angle measures 65°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  5. 5.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  7. 7.An angle measures 135°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  8. 8.An angle measures 90°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  9. 9.Three angles meet at a point. Two of them are 90° and 60°. What is the third angle (in degrees)?
  10. 10.An angle measures 70°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  11. 11.Two angles of a triangle are 80° and 30°. What is the third angle (in degrees)?
  12. 12.An angle measures 60°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  13. 13.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 120° and 70°. What is the third angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  16. 16.Two angles of a triangle are 95° and 70°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 70° and 210°. What is the third angle (in degrees)?
  18. 18.An angle measures 10°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  19. 19.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  20. 20.An angle measures 15°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  21. 21.Three angles meet at a point. Two of them are 70° and 140°. What is the third angle (in degrees)?
  22. 22.An angle measures 160°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  23. 23.Two angles of a triangle are 55° and 60°. What is the third angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  26. 26.Two angles of a triangle are 75° and 65°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 130° and 120°. What is the third angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  29. 29.Two angles of a triangle are 45° and 60°. What is the third angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  32. 32.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 120° and 60°. What is the third angle (in degrees)?
  37. 37.An angle measures 35°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  38. 38.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  39. 39.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  40. 40.Two angles of a triangle are 30° and 105°. What is the third angle (in degrees)?

Answer key

  1. 70
  2. 110
  3. 75
  4. Acute
  5. 180
  6. 155
  7. Obtuse
  8. Right
  9. 210
  10. Acute
  11. 70
  12. Acute
  13. 60
  14. 170
  15. 90
  16. 15
  17. 80
  18. Acute
  19. 170
  20. Acute
  21. 150
  22. Obtuse
  23. 65
  24. 90
  25. 165
  26. 40
  27. 110
  28. 150
  29. 75
  30. 60
  31. 55
  32. 60
  33. 30
  34. 120
  35. 5
  36. 180
  37. Acute
  38. 30
  39. Straight
  40. 45

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