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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 263 · 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.Three angles meet at a point. Two of them are 140° and 60°. What is the third angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 70° and 160°. What is the third angle (in degrees)?
  3. 3.An angle measures 125°. 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 20°. What is the other angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  6. 6.An angle measures 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  7. 7.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  8. 8.An angle measures 180°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  9. 9.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 90° and 60°. What is the third angle (in degrees)?
  11. 11.Two angles of a triangle are 90° and 50°. What is the third angle (in degrees)?
  12. 12.Three angles meet at a point. Two of them are 100° and 190°. What is the third angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  15. 15.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 50° and 120°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 70° and 100°. What is the third angle (in degrees)?
  19. 19.An angle measures 130°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  20. 20.Two angles of a triangle are 25° and 100°. What is the third angle (in degrees)?
  21. 21.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  22. 22.Two angles of a triangle are 30° and 60°. What is the third angle (in degrees)?
  23. 23.Two angles of a triangle are 85° and 35°. What is the third angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 90° and 100°. What is the third angle (in degrees)?
  26. 26.Two angles of a triangle are 75° and 25°. What is the third angle (in degrees)?
  27. 27.Two angles of a triangle are 55° and 90°. What is the third angle (in degrees)?
  28. 28.An angle measures 35°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  29. 29.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  31. 31.Three angles meet at a point. Two of them are 70° and 50°. What is the third angle (in degrees)?
  32. 32.Two angles of a triangle are 55° and 55°. What is the third angle (in degrees)?
  33. 33.An angle measures 40°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  34. 34.Two angles of a triangle are 95° and 60°. What is the third angle (in degrees)?
  35. 35.An angle measures 50°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  36. 36.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  38. 38.Two angles of a triangle are 65° and 40°. What is the third angle (in degrees)?
  39. 39.Two angles of a triangle are 60° and 20°. What is the third angle (in degrees)?
  40. 40.Two angles of a triangle are 70° and 85°. What is the third angle (in degrees)?

Answer key

  1. 160
  2. 130
  3. Obtuse
  4. 160
  5. 20
  6. Right
  7. 50
  8. Straight
  9. 60
  10. 210
  11. 40
  12. 70
  13. 120
  14. 60
  15. 180
  16. 70
  17. 190
  18. 10
  19. Obtuse
  20. 55
  21. 15
  22. 90
  23. 60
  24. 15
  25. 170
  26. 80
  27. 35
  28. Acute
  29. 30
  30. 100
  31. 240
  32. 70
  33. Acute
  34. 25
  35. Acute
  36. 30
  37. 10
  38. 75
  39. 100
  40. 25

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