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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 663 · 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 35°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  2. 2.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 120° and 80°. What is the third angle (in degrees)?
  4. 4.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  5. 5.An angle measures 40°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  6. 6.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  7. 7.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  8. 8.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  9. 9.Two angles of a triangle are 40° and 65°. What is the third angle (in degrees)?
  10. 10.An angle measures 90°. What kind of angle is it? (a) Straight (b) Obtuse (c) Right
  11. 11.Two angles of a triangle are 45° and 40°. What is the third angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 70° and 70°. What is the third angle (in degrees)?
  14. 14.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  15. 15.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  18. 18.An angle measures 10°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  19. 19.Two angles of a triangle are 25° and 130°. What is the third angle (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 60° and 60°. What is the third angle (in degrees)?
  21. 21.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  24. 24.An angle measures 130°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  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 2 o'clock (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 50° and 140°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 70° and 210°. What is the third angle (in degrees)?
  29. 29.Two angles of a triangle are 50° and 65°. What is the third angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 165°. What is the other angle (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 70° and 30°. What is the third angle (in degrees)?
  34. 34.An angle measures 55°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  35. 35.An angle measures 100°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  36. 36.An angle measures 65°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  37. 37.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  38. 38.Two angles of a triangle are 75° and 60°. What is the third angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 150° and 70°. What is the third angle (in degrees)?

Answer key

  1. Acute
  2. 25
  3. 160
  4. 50
  5. Acute
  6. 20
  7. 30
  8. 45
  9. 75
  10. Right
  11. 95
  12. 70
  13. 40
  14. Straight
  15. 65
  16. 5
  17. 30
  18. Acute
  19. 25
  20. 240
  21. 55
  22. 40
  23. 65
  24. Obtuse
  25. 110
  26. 60
  27. 170
  28. 80
  29. 65
  30. 45
  31. 15
  32. 150
  33. 80
  34. Acute
  35. Obtuse
  36. Acute
  37. 90
  38. 45
  39. 10
  40. 140

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