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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 371 · 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 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  2. 2.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 140° and 100°. What is the third angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 110° and 110°. What is the third angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  9. 9.An angle measures 10°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  10. 10.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  11. 11.Two angles of a triangle are 95° and 45°. What is the third angle (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  14. 14.Two angles of a triangle are 35° and 90°. What is the third angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  17. 17.Two angles of a triangle are 45° and 25°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 100° and 120°. What is the third angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  22. 22.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  23. 23.An angle measures 140°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  24. 24.Two angles of a triangle are 90° and 55°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  26. 26.An angle measures 45°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  27. 27.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  28. 28.Two angles of a triangle are 95° and 25°. What is the third angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 80° and 170°. What is the third angle (in degrees)?
  31. 31.An angle measures 95°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  32. 32.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 50° and 120°. What is the third angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  40. 40.An angle measures 165°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse

Answer key

  1. Straight
  2. 90
  3. 120
  4. 140
  5. 170
  6. 75
  7. 40
  8. 60
  9. Acute
  10. 70
  11. 40
  12. 65
  13. 70
  14. 55
  15. 120
  16. 20
  17. 110
  18. 35
  19. 140
  20. 45
  21. 120
  22. Right
  23. Obtuse
  24. 35
  25. 30
  26. Acute
  27. 120
  28. 60
  29. 150
  30. 110
  31. Obtuse
  32. 140
  33. 20
  34. 190
  35. 90
  36. 90
  37. 10
  38. 180
  39. 55
  40. Obtuse

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