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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 386 · 40 sums
TalentJR

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.Three angles meet at a point. Two of them are 90° and 180°. What is the third angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  5. 5.An angle measures 75°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  6. 6.Two angles of a triangle are 100° and 25°. What is the third angle (in degrees)?
  7. 7.An angle measures 180°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  8. 8.Three angles meet at a point. Two of them are 70° and 200°. What is the third angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 80° and 95°. What is the third angle (in degrees)?
  13. 13.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  14. 14.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  18. 18.An angle measures 10°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  19. 19.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  20. 20.Two angles of a triangle are 20° and 90°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 80° and 70°. What is the third angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 100° and 160°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  29. 29.An angle measures 120°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  30. 30.Two angles of a triangle are 70° and 90°. What is the third angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 70° and 80°. What is the third angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 120° and 100°. What is the third angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 120° and 130°. What is the third angle (in degrees)?
  34. 34.An angle measures 50°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  35. 35.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  36. 36.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  37. 37.Two angles of a triangle are 25° and 150°. What is the third angle (in degrees)?
  38. 38.An angle measures 25°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  39. 39.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  40. 40.Two angles of a triangle are 100° and 40°. What is the third angle (in degrees)?

Answer key

  1. 90
  2. 45
  3. 30
  4. 120
  5. Acute
  6. 55
  7. Straight
  8. 90
  9. 60
  10. 170
  11. 15
  12. 5
  13. Right
  14. 15
  15. 80
  16. 35
  17. 55
  18. Acute
  19. 75
  20. 70
  21. 50
  22. 210
  23. 120
  24. 100
  25. 110
  26. 150
  27. 70
  28. 40
  29. Obtuse
  30. 20
  31. 210
  32. 140
  33. 110
  34. Acute
  35. 5
  36. 60
  37. 5
  38. Acute
  39. 180
  40. 40

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