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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 293 · 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 8 o'clock (in degrees)?
  2. 2.An angle measures 140°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  3. 3.An angle measures 120°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  4. 4.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  6. 6.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  7. 7.Three angles meet at a point. Two of them are 100° and 80°. What is the third angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  13. 13.An angle measures 105°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  14. 14.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 60° and 200°. What is the third angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 55° and 50°. What is the third angle (in degrees)?
  19. 19.An angle measures 115°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  20. 20.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 90° and 120°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 55° and 95°. What is the third angle (in degrees)?
  23. 23.An angle measures 150°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  24. 24.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  26. 26.An angle measures 175°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  27. 27.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  28. 28.An angle measures 20°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  29. 29.Two angles of a triangle are 70° and 25°. What is the third angle (in degrees)?
  30. 30.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  31. 31.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 70° and 20°. What is the third angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 90° and 110°. What is the third angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?

Answer key

  1. 120
  2. Obtuse
  3. Obtuse
  4. 165
  5. 55
  6. Right
  7. 180
  8. 20
  9. 35
  10. 150
  11. 150
  12. 230
  13. Obtuse
  14. 75
  15. 55
  16. 100
  17. 75
  18. 75
  19. Obtuse
  20. 35
  21. 150
  22. 30
  23. Obtuse
  24. 140
  25. 150
  26. Obtuse
  27. 180
  28. Acute
  29. 85
  30. Straight
  31. 15
  32. 25
  33. 90
  34. 10
  35. 90
  36. 50
  37. 30
  38. 160
  39. 90
  40. 60

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