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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 718 · 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.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  2. 2.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  4. 4.Three angles meet at a point. Two of them are 70° and 100°. What is the third angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  6. 6.An angle measures 110°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  7. 7.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 3 o'clock (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 9 o'clock (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 80° and 50°. What is the third angle (in degrees)?
  13. 13.Two angles of a triangle are 20° and 80°. What is the third angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 90° and 160°. What is the third angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (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 95°. What is the other angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 60° and 240°. What is the third angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 140° and 90°. What is the third angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  28. 28.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  29. 29.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 80° and 90°. What is the third angle (in degrees)?
  31. 31.An angle measures 55°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  32. 32.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?
  33. 33.An angle measures 145°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  34. 34.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  35. 35.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  36. 36.Two angles of a triangle are 85° and 30°. What is the third angle (in degrees)?
  37. 37.An angle measures 60°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  38. 38.An angle measures 35°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  39. 39.Three angles meet at a point. Two of them are 130° and 60°. What is the third angle (in degrees)?
  40. 40.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?

Answer key

  1. Right
  2. 180
  3. 70
  4. 190
  5. 80
  6. Obtuse
  7. 25
  8. 90
  9. 10
  10. 90
  11. 125
  12. 50
  13. 80
  14. 105
  15. 155
  16. 110
  17. 65
  18. 200
  19. 150
  20. 85
  21. 30
  22. 35
  23. 60
  24. 130
  25. 150
  26. 15
  27. 70
  28. Straight
  29. 150
  30. 10
  31. Acute
  32. 210
  33. Obtuse
  34. 20
  35. 140
  36. 65
  37. Acute
  38. Acute
  39. 170
  40. 25

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