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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 301 · 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.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  2. 2.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  3. 3.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  4. 4.Three angles meet at a point. Two of them are 90° and 130°. What is the third angle (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  6. 6.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 60° and 85°. What is the third angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 110° and 110°. What is the third angle (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  14. 14.Two angles of a triangle are 40° and 95°. What is the third angle (in degrees)?
  15. 15.An angle measures 115°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  16. 16.Two angles together make a straight line. One of them is 105°. 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.Three angles meet at a point. Two of them are 120° and 60°. What is the third angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  20. 20.Three angles meet at a point. Two of them are 70° and 150°. What is the third angle (in degrees)?
  21. 21.Two angles of a triangle are 100° and 65°. What is the third angle (in degrees)?
  22. 22.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  23. 23.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 150° and 60°. What is the third angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 90° and 100°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 35° and 40°. What is the third angle (in degrees)?
  29. 29.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  30. 30.An angle measures 25°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  31. 31.An angle measures 145°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  32. 32.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  34. 34.Two angles of a triangle are 55° and 85°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 25° and 25°. What is the third angle (in degrees)?
  36. 36.An angle measures 15°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  37. 37.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 70° and 90°. What is the third angle (in degrees)?
  39. 39.An angle measures 155°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  40. 40.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?

Answer key

  1. 150
  2. 55
  3. Right
  4. 140
  5. 155
  6. 35
  7. 160
  8. 35
  9. 120
  10. 140
  11. 10
  12. 30
  13. 30
  14. 45
  15. Obtuse
  16. 75
  17. 30
  18. 180
  19. 120
  20. 140
  21. 15
  22. Straight
  23. 80
  24. 25
  25. 150
  26. 90
  27. 170
  28. 105
  29. 95
  30. Acute
  31. Obtuse
  32. 170
  33. 90
  34. 40
  35. 130
  36. Acute
  37. 165
  38. 200
  39. Obtuse
  40. 20

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