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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 602 · 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 180°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  2. 2.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 110° and 110°. What is the third angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  9. 9.An angle measures 165°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  10. 10.An angle measures 55°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  11. 11.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 85° and 35°. What is the third angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 140° and 90°. What is the third angle (in degrees)?
  15. 15.Two angles of a triangle are 30° and 45°. What is the third angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  17. 17.Two angles of a triangle are 35° and 20°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  23. 23.Two angles of a triangle are 20° and 155°. What is the third angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  25. 25.Two angles of a triangle are 50° and 45°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 90° and 85°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 90° and 200°. What is the third angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  29. 29.An angle measures 140°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  30. 30.An angle measures 25°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  31. 31.Two angles of a triangle are 75° and 30°. What is the third 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.An angle measures 50°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  34. 34.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  37. 37.An angle measures 85°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  38. 38.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 60° and 90°. What is the third angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?

Answer key

  1. Straight
  2. 20
  3. 90
  4. 90
  5. 5
  6. 140
  7. 35
  8. 30
  9. Obtuse
  10. Acute
  11. 40
  12. 150
  13. 60
  14. 130
  15. 105
  16. 150
  17. 125
  18. 45
  19. 75
  20. 155
  21. 70
  22. 165
  23. 5
  24. 60
  25. 85
  26. 5
  27. 70
  28. 30
  29. Obtuse
  30. Acute
  31. 75
  32. 10
  33. Acute
  34. 15
  35. 160
  36. 160
  37. Acute
  38. 20
  39. 210
  40. 180

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