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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 712 · 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 80° and 210°. What is the third angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  5. 5.Two angles of a triangle are 45° and 75°. What is the third angle (in degrees)?
  6. 6.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  7. 7.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  8. 8.Two angles of a triangle are 70° and 20°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 120° and 150°. What is the third angle (in degrees)?
  10. 10.Two angles of a triangle are 35° and 95°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 100° and 80°. What is the third angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  17. 17.An angle measures 120°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  18. 18.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 90° and 70°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 20° and 45°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 100° and 70°. What is the third angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  24. 24.An angle measures 10°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  25. 25.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  26. 26.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  27. 27.Two angles of a triangle are 100° and 70°. What is the third angle (in degrees)?
  28. 28.An angle measures 50°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  29. 29.An angle measures 125°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  30. 30.Two angles of a triangle are 80° and 70°. What is the third angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 25° and 85°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 55° and 120°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 95° and 60°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  37. 37.Two angles of a triangle are 60° and 90°. What is the third angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  39. 39.Two angles of a triangle are 90° and 65°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?

Answer key

  1. 70
  2. 60
  3. 75
  4. 180
  5. 60
  6. Straight
  7. 80
  8. 90
  9. 90
  10. 50
  11. 60
  12. 40
  13. 40
  14. 180
  15. 150
  16. 35
  17. Obtuse
  18. 145
  19. 85
  20. 200
  21. 115
  22. 190
  23. 65
  24. Acute
  25. 125
  26. Right
  27. 10
  28. Acute
  29. Obtuse
  30. 30
  31. 95
  32. 10
  33. 70
  34. 5
  35. 25
  36. 20
  37. 30
  38. 90
  39. 25
  40. 130

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