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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 615 · 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 60°. What is the other angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  3. 3.An angle measures 90°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  4. 4.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 95°. What is the other angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 120° and 80°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 35° and 65°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 90° and 110°. What is the third angle (in degrees)?
  10. 10.Two angles of a triangle are 40° and 80°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 30° and 105°. What is the third angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 70° and 140°. What is the third angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 110° and 80°. What is the third angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  20. 20.An angle measures 45°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  21. 21.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 45° and 120°. What is the third angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  30. 30.Two angles of a triangle are 35° and 125°. What is the third angle (in degrees)?
  31. 31.An angle measures 105°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  32. 32.Three angles meet at a point. Two of them are 90° and 190°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 80° and 90°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 60° and 45°. What is the third angle (in degrees)?
  35. 35.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  36. 36.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  37. 37.An angle measures 30°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  38. 38.Three angles meet at a point. Two of them are 130° and 80°. What is the third angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?

Answer key

  1. 30
  2. 160
  3. Right
  4. 60
  5. 150
  6. 85
  7. 160
  8. 80
  9. 160
  10. 60
  11. 90
  12. 65
  13. 45
  14. 70
  15. 150
  16. 55
  17. 170
  18. 135
  19. 80
  20. Acute
  21. 110
  22. 15
  23. 30
  24. 75
  25. 180
  26. 125
  27. 165
  28. 10
  29. 120
  30. 20
  31. Obtuse
  32. 80
  33. 10
  34. 75
  35. Straight
  36. 70
  37. Acute
  38. 150
  39. 30
  40. 90

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