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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 536 · 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 55°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  2. 2.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  4. 4.Two angles of a triangle are 60° and 65°. What is the third angle (in degrees)?
  5. 5.Two angles of a triangle are 60° and 30°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 70° and 70°. What is the third angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  8. 8.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  9. 9.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 60° and 90°. What is the third angle (in degrees)?
  11. 11.An angle measures 30°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  12. 12.Two angles of a triangle are 65° and 25°. What is the third angle (in degrees)?
  13. 13.An angle measures 90°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  14. 14.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 110° and 130°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 110° and 120°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  19. 19.Two angles of a triangle are 55° and 80°. What is the third angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  21. 21.Two angles of a triangle are 80° and 90°. What is the third angle (in degrees)?
  22. 22.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  23. 23.An angle measures 40°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  24. 24.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 140° and 90°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 100° and 45°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 90° and 40°. What is the third 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.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 110° and 150°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  37. 37.Two angles of a triangle are 60° and 35°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 140° and 160°. What is the third angle (in degrees)?
  40. 40.Two angles of a triangle are 100° and 30°. What is the third angle (in degrees)?

Answer key

  1. Acute
  2. 180
  3. 55
  4. 55
  5. 90
  6. 220
  7. 90
  8. Straight
  9. 60
  10. 210
  11. Acute
  12. 90
  13. Right
  14. 35
  15. 15
  16. 120
  17. 130
  18. 150
  19. 45
  20. 90
  21. 10
  22. 170
  23. Acute
  24. 135
  25. 120
  26. 130
  27. 35
  28. 125
  29. 25
  30. 155
  31. 50
  32. 25
  33. 150
  34. 100
  35. 15
  36. 80
  37. 85
  38. 10
  39. 60
  40. 50

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