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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 206 · 40 sums
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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 170°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  2. 2.An angle measures 130°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  3. 3.An angle measures 40°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  4. 4.Two angles together make a straight line. One of them is 105°. What is the other angle (in degrees)?
  5. 5.An angle measures 85°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  6. 6.Three angles meet at a point. Two of them are 110° and 190°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 110° and 50°. What is the third angle (in degrees)?
  8. 8.An angle measures 90°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  9. 9.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  10. 10.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  12. 12.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  13. 13.Two angles of a triangle are 80° and 60°. What is the third angle (in degrees)?
  14. 14.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  16. 16.Three angles meet at a point. Two of them are 110° and 60°. What is the third angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 90° and 40°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  20. 20.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  21. 21.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  22. 22.An angle measures 55°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  23. 23.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 120° and 120°. What is the third angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  27. 27.Two angles of a triangle are 25° and 135°. What is the third angle (in degrees)?
  28. 28.Three angles meet at a point. Two of them are 60° and 160°. 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 55°. What is the other angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  32. 32.Two angles of a triangle are 60° and 115°. What is the third angle (in degrees)?
  33. 33.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  34. 34.An angle measures 45°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  35. 35.Two angles together make a straight line. One of them is 145°. What is the other angle (in degrees)?
  36. 36.Two angles of a triangle are 65° and 90°. What is the third angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 90° and 130°. What is the third angle (in degrees)?
  38. 38.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  39. 39.An angle measures 100°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  40. 40.Two angles of a triangle are 80° and 35°. What is the third angle (in degrees)?

Answer key

  1. Obtuse
  2. Obtuse
  3. Acute
  4. 75
  5. Acute
  6. 60
  7. 200
  8. Right
  9. 70
  10. 30
  11. 90
  12. 150
  13. 40
  14. 30
  15. 25
  16. 190
  17. 50
  18. 50
  19. 120
  20. Straight
  21. 170
  22. Acute
  23. 55
  24. 120
  25. 130
  26. 80
  27. 20
  28. 140
  29. 50
  30. 35
  31. 150
  32. 5
  33. 95
  34. Acute
  35. 35
  36. 25
  37. 140
  38. 150
  39. Obtuse
  40. 65

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