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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 737 · 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 of a triangle are 25° and 25°. What is the third angle (in degrees)?
  2. 2.An angle measures 60°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  3. 3.Two angles of a triangle are 80° and 30°. What is the third angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 60° and 80°. What is the third angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 50° and 190°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 100° and 100°. What is the third angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  10. 10.Two angles of a triangle are 25° and 55°. 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.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  16. 16.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 35°. What is the other 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 50° and 90°. What is the third angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 110° and 170°. What is the third angle (in degrees)?
  21. 21.An angle measures 180°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  22. 22.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 70° and 70°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  27. 27.An angle measures 120°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  28. 28.Three angles meet at a point. Two of them are 70° and 90°. What is the third angle (in degrees)?
  29. 29.An angle measures 160°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  30. 30.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  31. 31.An angle measures 10°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  32. 32.Three angles meet at a point. Two of them are 110° and 140°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  34. 34.Two angles of a triangle are 80° and 20°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 60° and 60°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 50° and 80°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  39. 39.Two angles of a triangle are 95° and 80°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?

Answer key

  1. 130
  2. Acute
  3. 70
  4. 220
  5. 130
  6. 120
  7. 80
  8. 160
  9. 55
  10. 100
  11. 125
  12. 90
  13. 30
  14. 150
  15. 75
  16. 30
  17. 145
  18. 35
  19. 220
  20. 80
  21. Straight
  22. 75
  23. 135
  24. 220
  25. 120
  26. 150
  27. Obtuse
  28. 200
  29. Obtuse
  30. 25
  31. Acute
  32. 110
  33. 160
  34. 80
  35. 240
  36. 50
  37. 160
  38. 180
  39. 5
  40. 60

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