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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 259 · 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.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 60° and 120°. What is the third angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  6. 6.Two angles of a triangle are 20° and 40°. What is the third angle (in degrees)?
  7. 7.An angle measures 180°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  8. 8.Two angles of a triangle are 65° and 55°. What is the third angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 120° and 60°. What is the third angle (in degrees)?
  11. 11.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  12. 12.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  14. 14.Two angles of a triangle are 90° and 30°. What is the third angle (in degrees)?
  15. 15.Two angles of a triangle are 85° and 55°. What is the third angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 80° and 160°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 80° and 100°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 50° and 115°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  20. 20.Two angles of a triangle are 80° and 30°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 80° and 60°. What is the third angle (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  23. 23.Two angles of a triangle are 60° and 100°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  25. 25.Two angles of a triangle are 40° and 25°. What is the third angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  27. 27.An angle measures 70°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  28. 28.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  29. 29.Two angles of a triangle are 100° and 75°. What is the third angle (in degrees)?
  30. 30.An angle measures 10°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  31. 31.Three angles meet at a point. Two of them are 70° and 190°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 150° and 100°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 35° and 115°. What is the third angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  39. 39.Two angles of a triangle are 45° and 95°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 130° and 80°. What is the third angle (in degrees)?

Answer key

  1. 145
  2. 180
  3. 30
  4. 40
  5. 75
  6. 120
  7. Straight
  8. 60
  9. 180
  10. 180
  11. Right
  12. 70
  13. 70
  14. 60
  15. 40
  16. 120
  17. 180
  18. 15
  19. 150
  20. 70
  21. 40
  22. 60
  23. 20
  24. 85
  25. 115
  26. 165
  27. Acute
  28. 30
  29. 5
  30. Acute
  31. 100
  32. 150
  33. 10
  34. 110
  35. 180
  36. 30
  37. 45
  38. 90
  39. 40
  40. 150

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