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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 235 · 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 120°. What is the other angle (in degrees)?
  2. 2.An angle measures 60°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  3. 3.A right angle is split into two angles. One of them is 60°. What is the other 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 together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 70° and 120°. What is the third angle (in degrees)?
  7. 7.An angle measures 165°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  8. 8.An angle measures 95°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  9. 9.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 50° and 100°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  12. 12.Two angles of a triangle are 85° and 55°. What is the third angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 80° and 200°. What is the third angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 100° and 150°. What is the third angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 100° and 60°. What is the third angle (in degrees)?
  19. 19.An angle measures 115°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  20. 20.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 80° and 60°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  28. 28.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  29. 29.An angle measures 110°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  30. 30.An angle measures 80°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  31. 31.Three angles meet at a point. Two of them are 100° and 70°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 140° and 160°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 55° and 120°. What is the third angle (in degrees)?
  34. 34.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 60° and 160°. What is the third angle (in degrees)?
  36. 36.An angle measures 20°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  37. 37.Two angles of a triangle are 85° and 80°. What is the third angle (in degrees)?
  38. 38.Two angles of a triangle are 70° and 40°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 120° and 120°. What is the third angle (in degrees)?

Answer key

  1. 60
  2. Acute
  3. 30
  4. 30
  5. 95
  6. 170
  7. Obtuse
  8. Obtuse
  9. 20
  10. 210
  11. 30
  12. 40
  13. 50
  14. 80
  15. 210
  16. 85
  17. 110
  18. 200
  19. Obtuse
  20. 120
  21. 90
  22. 150
  23. 125
  24. 35
  25. 150
  26. 220
  27. 80
  28. 10
  29. Obtuse
  30. Acute
  31. 190
  32. 60
  33. 5
  34. 150
  35. 140
  36. Acute
  37. 15
  38. 70
  39. 5
  40. 120

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