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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 668 · 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 130°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  2. 2.An angle measures 105°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  3. 3.Two angles of a triangle are 85° and 90°. What is the third angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  6. 6.Two angles of a triangle are 85° and 30°. What is the third angle (in degrees)?
  7. 7.Two angles of a triangle are 40° and 50°. What is the third angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 100° and 90°. What is the third angle (in degrees)?
  10. 10.An angle measures 95°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  11. 11.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  13. 13.An angle measures 180°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  14. 14.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  16. 16.Two angles of a triangle are 50° and 30°. What is the third angle (in degrees)?
  17. 17.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  18. 18.Two angles of a triangle are 100° and 20°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  20. 20.Two angles of a triangle are 85° and 40°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 110° and 60°. What is the third angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  26. 26.An angle measures 120°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  27. 27.An angle measures 110°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  28. 28.Two angles of a triangle are 30° and 65°. What is the third angle (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 100° and 80°. What is the third angle (in degrees)?
  30. 30.An angle measures 70°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  31. 31.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  32. 32.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  35. 35.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 80° and 220°. What is the third angle (in degrees)?
  38. 38.Two angles of a triangle are 90° and 65°. What is the third angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  40. 40.Two angles of a triangle are 20° and 115°. What is the third angle (in degrees)?

Answer key

  1. Obtuse
  2. Obtuse
  3. 5
  4. 150
  5. 75
  6. 65
  7. 90
  8. 180
  9. 170
  10. Obtuse
  11. 130
  12. 60
  13. Straight
  14. 140
  15. 30
  16. 100
  17. Right
  18. 60
  19. 60
  20. 55
  21. 40
  22. 190
  23. 80
  24. 20
  25. 15
  26. Obtuse
  27. Obtuse
  28. 85
  29. 180
  30. Acute
  31. 65
  32. 120
  33. 120
  34. 25
  35. 150
  36. 165
  37. 60
  38. 25
  39. 70
  40. 45

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