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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 340 · 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 55°. What is the other angle (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  3. 3.An angle measures 90°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  4. 4.Two angles of a triangle are 65° and 65°. What is the third angle (in degrees)?
  5. 5.Two angles of a triangle are 80° and 25°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 60° and 200°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 60° and 25°. What is the third angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  11. 11.An angle measures 85°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  12. 12.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  13. 13.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  14. 14.An angle measures 60°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  15. 15.An angle measures 125°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  16. 16.Three angles meet at a point. Two of them are 60° and 210°. What is the third angle (in degrees)?
  17. 17.An angle measures 180°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  18. 18.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  19. 19.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  20. 20.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  22. 22.An angle measures 25°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  23. 23.Two angles of a triangle are 45° and 65°. What is the third angle (in degrees)?
  24. 24.An angle measures 100°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  25. 25.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  26. 26.Two angles of a triangle are 40° and 65°. What is the third angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  30. 30.Three angles meet at a point. Two of them are 90° and 80°. What is the third angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  32. 32.Three angles meet at a point. Two of them are 90° and 50°. What is the third angle (in degrees)?
  33. 33.Two angles of a triangle are 100° and 65°. What is the third angle (in degrees)?
  34. 34.An angle measures 20°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  35. 35.Two angles of a triangle are 25° and 30°. What is the third angle (in degrees)?
  36. 36.An angle measures 80°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  37. 37.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 70° and 70°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 70° and 180°. What is the third angle (in degrees)?

Answer key

  1. 125
  2. 65
  3. Right
  4. 50
  5. 75
  6. 70
  7. 100
  8. 95
  9. 85
  10. 15
  11. Acute
  12. 90
  13. 20
  14. Acute
  15. Obtuse
  16. 90
  17. Straight
  18. 150
  19. 30
  20. 60
  21. 45
  22. Acute
  23. 70
  24. Obtuse
  25. 150
  26. 75
  27. 95
  28. 180
  29. 30
  30. 190
  31. 140
  32. 220
  33. 15
  34. Acute
  35. 125
  36. Acute
  37. 140
  38. 70
  39. 220
  40. 110

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