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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 674 · 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 25°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  2. 2.Three angles meet at a point. Two of them are 90° and 200°. What is the third angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  4. 4.Two angles of a triangle are 90° and 40°. What is the third angle (in degrees)?
  5. 5.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  6. 6.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  10. 10.An angle measures 105°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  11. 11.Three angles meet at a point. Two of them are 60° and 180°. What is the third angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  13. 13.An angle measures 85°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  14. 14.An angle measures 160°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  15. 15.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 50° and 110°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 60° and 220°. What is the third angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  22. 22.An angle measures 120°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  23. 23.Three angles meet at a point. Two of them are 130° and 100°. What is the third angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 70° and 90°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 70° and 70°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  30. 30.Two angles of a triangle are 65° and 40°. What is the third angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  32. 32.An angle measures 45°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  33. 33.An angle measures 10°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  34. 34.Two angles of a triangle are 60° and 35°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 110° and 130°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  37. 37.Two angles of a triangle are 20° and 35°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 100° and 100°. What is the third angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 95° and 25°. What is the third angle (in degrees)?

Answer key

  1. Acute
  2. 70
  3. 70
  4. 50
  5. Straight
  6. 45
  7. 150
  8. 150
  9. 100
  10. Obtuse
  11. 120
  12. 15
  13. Acute
  14. Obtuse
  15. 75
  16. 50
  17. 105
  18. 200
  19. 80
  20. 60
  21. 60
  22. Obtuse
  23. 130
  24. 200
  25. 90
  26. 65
  27. 220
  28. 135
  29. 70
  30. 75
  31. 55
  32. Acute
  33. Acute
  34. 85
  35. 120
  36. 160
  37. 125
  38. 160
  39. 60
  40. 60

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