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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 469 · 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.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  3. 3.An angle measures 35°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  4. 4.Three angles meet at a point. Two of them are 130° and 150°. What is the third angle (in degrees)?
  5. 5.An angle measures 140°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  6. 6.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 60° and 170°. What is the third angle (in degrees)?
  9. 9.Two angles of a triangle are 45° and 75°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 70° and 60°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 80° and 65°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  14. 14.An angle measures 15°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  15. 15.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  17. 17.An angle measures 180°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  18. 18.Two angles of a triangle are 55° and 120°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 70° and 100°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 65° and 60°. What is the third angle (in degrees)?
  22. 22.An angle measures 80°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  23. 23.Three angles meet at a point. Two of them are 150° and 50°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 40° and 20°. What is the third angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 120° and 80°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 55° and 80°. What is the third angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 70° and 210°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 30° and 120°. What is the third angle (in degrees)?
  32. 32.An angle measures 85°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  33. 33.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 120° and 130°. What is the third angle (in degrees)?
  36. 36.An angle measures 90°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  37. 37.Three angles meet at a point. Two of them are 140° and 60°. What is the third angle (in degrees)?
  38. 38.Two angles of a triangle are 90° and 50°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?

Answer key

  1. 60
  2. 90
  3. Acute
  4. 80
  5. Obtuse
  6. 150
  7. 20
  8. 130
  9. 60
  10. 230
  11. 30
  12. 35
  13. 30
  14. Acute
  15. 145
  16. 150
  17. Straight
  18. 5
  19. 155
  20. 190
  21. 55
  22. Acute
  23. 160
  24. 120
  25. 160
  26. 55
  27. 45
  28. 80
  29. 80
  30. 140
  31. 30
  32. Acute
  33. 30
  34. 100
  35. 110
  36. Right
  37. 160
  38. 40
  39. 10
  40. 50

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