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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 39 · 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 together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  2. 2.An angle measures 150°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  3. 3.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  4. 4.An angle measures 90°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  5. 5.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 110° and 140°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 100° and 130°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 70° and 65°. What is the third angle (in degrees)?
  9. 9.An angle measures 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  10. 10.An angle measures 140°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  11. 11.Three angles meet at a point. Two of them are 50° and 50°. What is the third angle (in degrees)?
  12. 12.An angle measures 30°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  13. 13.Three angles meet at a point. Two of them are 80° and 110°. What is the third angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 50° and 60°. What is the third angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  16. 16.Two angles of a triangle are 55° and 65°. What is the third angle (in degrees)?
  17. 17.An angle measures 50°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  18. 18.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  23. 23.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  24. 24.Two angles of a triangle are 80° and 70°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 45°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 80° and 130°. What is the third angle (in degrees)?
  28. 28.An angle measures 135°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  29. 29.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  30. 30.Two angles of a triangle are 20° and 60°. What is the third angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 70° and 50°. What is the third angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 90° and 130°. What is the third angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  37. 37.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  38. 38.Two angles of a triangle are 70° and 100°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?

Answer key

  1. 140
  2. Obtuse
  3. 20
  4. Right
  5. 40
  6. 110
  7. 130
  8. 45
  9. Straight
  10. Obtuse
  11. 260
  12. Acute
  13. 170
  14. 250
  15. 60
  16. 60
  17. Acute
  18. 30
  19. 150
  20. 20
  21. 10
  22. 60
  23. 60
  24. 30
  25. 75
  26. 135
  27. 150
  28. Obtuse
  29. 60
  30. 100
  31. 5
  32. 130
  33. 60
  34. 140
  35. 160
  36. 35
  37. 80
  38. 10
  39. 65
  40. 35

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