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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 887 · 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.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 140° and 130°. What is the third angle (in degrees)?
  4. 4.An angle measures 20°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  5. 5.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 50° and 230°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 100° and 20°. What is the third angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  10. 10.An angle measures 110°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  11. 11.An angle measures 45°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  12. 12.An angle measures 160°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  13. 13.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 70° and 130°. What is the third angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 55° and 80°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 120° and 100°. What is the third angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 120° and 50°. What is the third angle (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  22. 22.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  23. 23.Two angles of a triangle are 20° and 150°. What is the third angle (in degrees)?
  24. 24.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  25. 25.Three angles meet at a point. Two of them are 150° and 50°. What is the third angle (in degrees)?
  26. 26.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 20° and 70°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 150°. What is the other angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 80° and 55°. What is the third angle (in degrees)?
  34. 34.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  35. 35.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 140°. What is the other angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  39. 39.Two angles of a triangle are 30° and 65°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 80° and 160°. What is the third angle (in degrees)?

Answer key

  1. 160
  2. 150
  3. 90
  4. Acute
  5. 20
  6. 85
  7. 80
  8. 60
  9. 165
  10. Obtuse
  11. Acute
  12. Obtuse
  13. 25
  14. 70
  15. 160
  16. 140
  17. 10
  18. 45
  19. 140
  20. 190
  21. 60
  22. 120
  23. 10
  24. Right
  25. 160
  26. 110
  27. 90
  28. 170
  29. 35
  30. 30
  31. 30
  32. 150
  33. 45
  34. Straight
  35. 75
  36. 40
  37. 30
  38. 30
  39. 85
  40. 120

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