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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 345 · 40 sums
TalentJR

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 85°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  5. 5.An angle measures 90°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  6. 6.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  7. 7.Two angles of a triangle are 45° and 120°. What is the third angle (in degrees)?
  8. 8.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  9. 9.Three angles meet at a point. Two of them are 150° and 90°. What is the third angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 120° and 170°. What is the third angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  12. 12.An angle measures 55°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  13. 13.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  18. 18.An angle measures 30°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  19. 19.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 40° and 25°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  22. 22.Two angles of a triangle are 20° and 150°. What is the third angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 130° and 90°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 150° and 150°. What is the third angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  30. 30.An angle measures 20°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  31. 31.Two angles of a triangle are 55° and 70°. What is the third angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 90° and 50°. What is the third angle (in degrees)?
  35. 35.An angle measures 40°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  36. 36.An angle measures 140°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  37. 37.An angle measures 150°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  38. 38.Three angles meet at a point. Two of them are 50° and 230°. What is the third angle (in degrees)?
  39. 39.An angle measures 155°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  40. 40.Three angles meet at a point. Two of them are 100° and 200°. What is the third angle (in degrees)?

Answer key

  1. 5
  2. 30
  3. 85
  4. 90
  5. Right
  6. 20
  7. 15
  8. Straight
  9. 120
  10. 70
  11. 125
  12. Acute
  13. 30
  14. 120
  15. 65
  16. 135
  17. 90
  18. Acute
  19. 95
  20. 115
  21. 30
  22. 10
  23. 60
  24. 140
  25. 60
  26. 130
  27. 160
  28. 60
  29. 180
  30. Acute
  31. 55
  32. 30
  33. 55
  34. 220
  35. Acute
  36. Obtuse
  37. Obtuse
  38. 80
  39. Obtuse
  40. 60

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