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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 530 · 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 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  2. 2.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  3. 3.An angle measures 95°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  4. 4.An angle measures 180°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  5. 5.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  6. 6.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 80° and 60°. What is the third angle (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 110° and 110°. What is the third angle (in degrees)?
  10. 10.Two angles of a triangle are 60° and 80°. What is the third angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 140° and 120°. What is the third angle (in degrees)?
  13. 13.Two angles of a triangle are 20° and 85°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  16. 16.An angle measures 25°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  17. 17.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  21. 21.Two angles of a triangle are 95° and 50°. What is the third angle (in degrees)?
  22. 22.An angle measures 20°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  23. 23.Two angles of a triangle are 65° and 60°. What is the third angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 110° and 140°. What is the third angle (in degrees)?
  27. 27.An angle measures 160°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  28. 28.Three angles meet at a point. Two of them are 60° and 50°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 30° and 25°. What is the third angle (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?
  31. 31.An angle measures 30°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  32. 32.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  33. 33.An angle measures 10°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  34. 34.An angle measures 165°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  35. 35.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  37. 37.Two angles of a triangle are 45° and 115°. What is the third angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 50° and 210°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?

Answer key

  1. Right
  2. 30
  3. Obtuse
  4. Straight
  5. 90
  6. 70
  7. 220
  8. 70
  9. 140
  10. 40
  11. 150
  12. 100
  13. 75
  14. 30
  15. 55
  16. Acute
  17. 120
  18. 125
  19. 170
  20. 180
  21. 35
  22. Acute
  23. 55
  24. 120
  25. 80
  26. 110
  27. Obtuse
  28. 250
  29. 125
  30. 110
  31. Acute
  32. 115
  33. Acute
  34. Obtuse
  35. 15
  36. 150
  37. 20
  38. 100
  39. 80
  40. 50

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