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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 538 · 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) Straight (b) Acute (c) Right
  2. 2.Three angles meet at a point. Two of them are 140° and 130°. What is the third angle (in degrees)?
  3. 3.Two angles of a triangle are 95° and 65°. What is the third angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  5. 5.Two angles of a triangle are 35° and 75°. What is the third angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  10. 10.An angle measures 55°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  11. 11.An angle measures 90°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  12. 12.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  13. 13.Three angles meet at a point. Two of them are 70° and 100°. What is the third angle (in degrees)?
  14. 14.Two angles of a triangle are 100° and 65°. What is the third angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 120° and 90°. What is the third angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 100° and 160°. What is the third angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 110° and 160°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  21. 21.Two angles of a triangle are 30° and 125°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  24. 24.Two angles of a triangle are 45° and 25°. What is the third angle (in degrees)?
  25. 25.Two angles of a triangle are 20° and 25°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 70° and 20°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 20° and 105°. What is the third 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 155°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  30. 30.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  31. 31.An angle measures 165°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  32. 32.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 70° and 70°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 60° and 50°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 80° and 90°. What is the third angle (in degrees)?

Answer key

  1. Straight
  2. 90
  3. 20
  4. 30
  5. 70
  6. 60
  7. 85
  8. 5
  9. 180
  10. Acute
  11. Right
  12. 150
  13. 190
  14. 15
  15. 150
  16. 100
  17. 15
  18. 90
  19. 25
  20. 20
  21. 25
  22. 30
  23. 45
  24. 110
  25. 135
  26. 90
  27. 55
  28. 110
  29. Obtuse
  30. 45
  31. Obtuse
  32. 90
  33. 50
  34. 60
  35. 220
  36. 95
  37. 80
  38. 110
  39. 250
  40. 190

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