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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 576 · 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 110°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  2. 2.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  3. 3.Three angles meet at a point. Two of them are 50° and 50°. What is the third angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 1 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.Two angles of a triangle are 50° and 90°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 50° and 100°. What is the third angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 60° and 60°. What is the third angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 50° and 250°. What is the third angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  16. 16.Two angles of a triangle are 85° and 90°. What is the third angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 80° and 200°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 100° and 100°. What is the third angle (in degrees)?
  20. 20.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  21. 21.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  23. 23.Two angles of a triangle are 35° and 90°. What is the third angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 70° and 210°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 80° and 90°. What is the third angle (in degrees)?
  29. 29.An angle measures 80°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  30. 30.Two angles of a triangle are 65° and 70°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 120° and 120°. What is the third angle (in degrees)?
  32. 32.Two angles of a triangle are 65° and 85°. What is the third angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  37. 37.An angle measures 160°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  38. 38.Two angles of a triangle are 80° and 85°. What is the third angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 50° and 80°. What is the third angle (in degrees)?

Answer key

  1. Obtuse
  2. Straight
  3. 260
  4. 30
  5. 95
  6. 40
  7. 210
  8. 240
  9. 150
  10. 80
  11. 135
  12. 75
  13. 45
  14. 60
  15. 90
  16. 5
  17. 60
  18. 80
  19. 160
  20. Right
  21. 90
  22. 25
  23. 55
  24. 5
  25. 130
  26. 105
  27. 80
  28. 10
  29. Acute
  30. 45
  31. 120
  32. 30
  33. 70
  34. 150
  35. 30
  36. 65
  37. Obtuse
  38. 15
  39. 125
  40. 50

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