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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 566 · 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 40°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  9. 9.Two angles of a triangle are 25° and 55°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 110° and 100°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  12. 12.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  13. 13.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  14. 14.Two angles of a triangle are 60° and 85°. What is the third angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 90° and 160°. What is the third angle (in degrees)?
  16. 16.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  17. 17.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 95° and 75°. What is the third angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  21. 21.Two angles of a triangle are 60° and 55°. What is the third angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  23. 23.An angle measures 35°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  24. 24.Two angles of a triangle are 100° and 65°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 90° and 110°. What is the third angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 165°. 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 35° and 70°. What is the third angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 80° and 35°. What is the third angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 60° and 110°. What is the third angle (in degrees)?
  35. 35.An angle measures 155°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  36. 36.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 90° and 120°. What is the third angle (in degrees)?
  40. 40.An angle measures 95°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right

Answer key

  1. 50
  2. 60
  3. 20
  4. 95
  5. 150
  6. 120
  7. 165
  8. 150
  9. 100
  10. 150
  11. 35
  12. Right
  13. 65
  14. 35
  15. 110
  16. Straight
  17. 65
  18. 10
  19. 70
  20. 5
  21. 65
  22. 45
  23. Acute
  24. 15
  25. 60
  26. 75
  27. 160
  28. 30
  29. 15
  30. 155
  31. 75
  32. 45
  33. 65
  34. 190
  35. Obtuse
  36. 180
  37. 115
  38. 145
  39. 150
  40. Obtuse

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