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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 44 · 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.Three angles meet at a point. Two of them are 120° and 140°. What is the third angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  3. 3.Two angles of a triangle are 20° and 35°. What is the third angle (in degrees)?
  4. 4.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  5. 5.Two angles of a triangle are 85° and 65°. What is the third angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  7. 7.Two angles of a triangle are 75° and 85°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 45° and 45°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 120° and 150°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 95° and 70°. What is the third angle (in degrees)?
  14. 14.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  15. 15.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 60° and 230°. What is the third angle (in degrees)?
  17. 17.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  18. 18.Three angles meet at a point. Two of them are 110° and 190°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  21. 21.An angle measures 30°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  22. 22.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  24. 24.An angle measures 95°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  25. 25.An angle measures 85°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  26. 26.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 80° and 210°. What is the third angle (in degrees)?
  28. 28.An angle measures 20°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  29. 29.Two angles of a triangle are 100° and 65°. What is the third angle (in degrees)?
  30. 30.An angle measures 35°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  31. 31.Three angles meet at a point. Two of them are 80° and 110°. What is the third angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 150° and 110°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  37. 37.Two angles of a triangle are 35° and 90°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?

Answer key

  1. 100
  2. 30
  3. 125
  4. 170
  5. 30
  6. 165
  7. 20
  8. 90
  9. 90
  10. 230
  11. 5
  12. 155
  13. 15
  14. Straight
  15. 150
  16. 70
  17. Right
  18. 60
  19. 145
  20. 90
  21. Acute
  22. 150
  23. 30
  24. Obtuse
  25. Acute
  26. 45
  27. 70
  28. Acute
  29. 15
  30. Acute
  31. 170
  32. 120
  33. 25
  34. 65
  35. 100
  36. 110
  37. 55
  38. 30
  39. 60
  40. 70

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