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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 526 · 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.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  2. 2.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  4. 4.Two angles of a triangle are 100° and 50°. What is the third angle (in degrees)?
  5. 5.Two angles of a triangle are 80° and 85°. What is the third angle (in degrees)?
  6. 6.Two angles of a triangle are 50° and 25°. What is the third angle (in degrees)?
  7. 7.An angle measures 50°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  8. 8.Three angles meet at a point. Two of them are 80° and 160°. What is the third angle (in degrees)?
  9. 9.An angle measures 130°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  10. 10.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  11. 11.Two angles of a triangle are 65° and 75°. What is the third angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 20°. 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.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 50° and 230°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 90° and 100°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 8 o'clock (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.Three angles meet at a point. Two of them are 70° and 150°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  26. 26.An angle measures 85°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  27. 27.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 50° and 240°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  30. 30.Two angles of a triangle are 65° and 35°. What is the third angle (in degrees)?
  31. 31.An angle measures 30°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  32. 32.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  39. 39.Two angles of a triangle are 100° and 20°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 90° and 90°. What is the third angle (in degrees)?

Answer key

  1. Right
  2. 70
  3. 150
  4. 30
  5. 15
  6. 105
  7. Acute
  8. 120
  9. Obtuse
  10. 25
  11. 40
  12. 45
  13. 70
  14. 180
  15. 170
  16. 80
  17. 80
  18. 150
  19. 120
  20. 170
  21. 85
  22. 120
  23. 160
  24. 140
  25. 60
  26. Acute
  27. 90
  28. 70
  29. 75
  30. 80
  31. Acute
  32. 180
  33. 140
  34. 30
  35. 15
  36. 75
  37. 15
  38. 90
  39. 60
  40. 180

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