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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 586 · 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.Three angles meet at a point. Two of them are 130° and 130°. What is the third angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 90° and 60°. What is the third angle (in degrees)?
  3. 3.Two angles of a triangle are 25° and 125°. What is the third angle (in degrees)?
  4. 4.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  5. 5.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  6. 6.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  7. 7.An angle measures 50°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  8. 8.Two angles of a triangle are 25° and 120°. What is the third angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  11. 11.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  12. 12.An angle measures 100°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  13. 13.A right angle is split into two angles. 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 20°. What is the other angle (in degrees)?
  15. 15.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  16. 16.An angle measures 130°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  17. 17.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  18. 18.Two angles of a triangle are 90° and 35°. What is the third angle (in degrees)?
  19. 19.An angle measures 160°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  20. 20.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  21. 21.An angle measures 75°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  22. 22.Three angles meet at a point. Two of them are 120° and 70°. What is the third angle (in degrees)?
  23. 23.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  24. 24.Three angles meet at a point. Two of them are 70° and 160°. What is the third angle (in degrees)?
  25. 25.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  26. 26.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  27. 27.Two angles of a triangle are 45° and 40°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  29. 29.Two angles of a triangle are 70° and 35°. What is the third angle (in degrees)?
  30. 30.Two angles of a triangle are 75° and 55°. What is the third angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 90° and 180°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 110° and 130°. What is the third angle (in degrees)?
  36. 36.An angle measures 15°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  37. 37.Two angles together make a straight line. One of them is 70°. What is the other angle (in degrees)?
  38. 38.An angle measures 90°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  39. 39.An angle measures 20°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  40. 40.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?

Answer key

  1. 100
  2. 210
  3. 30
  4. 150
  5. 170
  6. Straight
  7. Acute
  8. 35
  9. 70
  10. 100
  11. 180
  12. Obtuse
  13. 30
  14. 70
  15. 160
  16. Obtuse
  17. 65
  18. 55
  19. Obtuse
  20. 120
  21. Acute
  22. 170
  23. 5
  24. 130
  25. 85
  26. 90
  27. 95
  28. 20
  29. 75
  30. 50
  31. 30
  32. 15
  33. 90
  34. 75
  35. 120
  36. Acute
  37. 110
  38. Right
  39. Acute
  40. 35

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