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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 783 · 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 130° and 120°. What is the third angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  3. 3.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  4. 4.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  5. 5.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  6. 6.An angle measures 180°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  7. 7.An angle measures 135°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  8. 8.Two angles of a triangle are 90° and 70°. What is the third angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  11. 11.Two angles of a triangle are 85° and 75°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 110° and 190°. What is the third angle (in degrees)?
  13. 13.Two angles of a triangle are 45° and 25°. What is the third angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  16. 16.An angle measures 60°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  17. 17.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  18. 18.An angle measures 25°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  19. 19.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 130° and 80°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 80° and 40°. What is the third angle (in degrees)?
  22. 22.Two angles of a triangle are 90° and 45°. What is the third angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  25. 25.An angle measures 95°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  26. 26.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  27. 27.An angle measures 10°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  28. 28.Three angles meet at a point. Two of them are 60° and 60°. What is the third angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  31. 31.Two angles of a triangle are 75° and 90°. What is the third angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 90°. What is the other angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  34. 34.Two angles of a triangle are 60° and 85°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 50° and 250°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 80° and 90°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 60° and 240°. What is the third angle (in degrees)?
  38. 38.An angle measures 140°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  39. 39.An angle measures 65°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  40. 40.Three angles meet at a point. Two of them are 100° and 120°. What is the third angle (in degrees)?

Answer key

  1. 110
  2. 120
  3. 150
  4. Right
  5. 30
  6. Straight
  7. Obtuse
  8. 20
  9. 10
  10. 90
  11. 20
  12. 60
  13. 110
  14. 20
  15. 40
  16. Acute
  17. 90
  18. Acute
  19. 150
  20. 150
  21. 60
  22. 45
  23. 80
  24. 140
  25. Obtuse
  26. 30
  27. Acute
  28. 240
  29. 50
  30. 10
  31. 15
  32. 90
  33. 5
  34. 35
  35. 60
  36. 190
  37. 60
  38. Obtuse
  39. Acute
  40. 140

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