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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 942 · 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.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  3. 3.An angle measures 60°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  4. 4.Two angles of a triangle are 35° and 85°. What is the third angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 50° and 150°. What is the third angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  9. 9.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  10. 10.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  12. 12.An angle measures 40°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  13. 13.Three angles meet at a point. Two of them are 50° and 230°. What is the third angle (in degrees)?
  14. 14.An angle measures 100°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  15. 15.Two angles of a triangle are 40° and 25°. What is the third angle (in degrees)?
  16. 16.Two angles of a triangle are 60° and 110°. What is the third angle (in degrees)?
  17. 17.Two angles of a triangle are 75° and 45°. What is the third angle (in degrees)?
  18. 18.An angle measures 70°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  19. 19.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  21. 21.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 150° and 50°. What is the third angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 20° and 70°. What is the third angle (in degrees)?
  26. 26.An angle measures 175°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  27. 27.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  29. 29.An angle measures 30°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  30. 30.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  31. 31.An angle measures 155°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  32. 32.Two angles of a triangle are 60° and 20°. What is the third angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 130° and 90°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 70° and 90°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 100° and 200°. What is the third angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  38. 38.An angle measures 65°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  39. 39.Three angles meet at a point. Two of them are 110° and 80°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?

Answer key

  1. 65
  2. 150
  3. Acute
  4. 60
  5. 145
  6. 30
  7. 160
  8. 150
  9. Straight
  10. 45
  11. 80
  12. Acute
  13. 80
  14. Obtuse
  15. 115
  16. 10
  17. 60
  18. Acute
  19. 35
  20. 125
  21. 180
  22. 160
  23. 105
  24. 130
  25. 90
  26. Obtuse
  27. 50
  28. 110
  29. Acute
  30. 90
  31. Obtuse
  32. 100
  33. 20
  34. 140
  35. 200
  36. 60
  37. 150
  38. Acute
  39. 170
  40. 170

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