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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 913 · 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.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  2. 2.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 60° and 190°. What is the third angle (in degrees)?
  4. 4.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  5. 5.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  6. 6.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  7. 7.An angle measures 180°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  8. 8.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 80° and 90°. What is the third angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  12. 12.An angle measures 15°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  13. 13.An angle measures 25°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  14. 14.Three angles meet at a point. Two of them are 80° and 160°. What is the third angle (in degrees)?
  15. 15.Two angles of a triangle are 80° and 80°. What is the third angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  17. 17.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 90° and 60°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 120° and 70°. What is the third angle (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  22. 22.Two angles of a triangle are 65° and 80°. What is the third angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 110° and 130°. What is the third angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  25. 25.Two angles of a triangle are 55° and 65°. What is the third angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  27. 27.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  28. 28.An angle measures 30°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  29. 29.An angle measures 115°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  30. 30.Two angles of a triangle are 25° and 25°. What is the third angle (in degrees)?
  31. 31.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 70° and 60°. What is the third angle (in degrees)?
  34. 34.An angle measures 45°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  35. 35.Three angles meet at a point. Two of them are 130° and 110°. What is the third angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  38. 38.An angle measures 35°. What kind of angle is it? (a) Acute (b) Right (c) Straight
  39. 39.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 70° and 90°. What is the third angle (in degrees)?

Answer key

  1. 65
  2. 30
  3. 110
  4. Right
  5. 25
  6. 150
  7. Straight
  8. 65
  9. 190
  10. 60
  11. 70
  12. Acute
  13. Acute
  14. 120
  15. 20
  16. 75
  17. 160
  18. 210
  19. 170
  20. 120
  21. 180
  22. 35
  23. 120
  24. 90
  25. 60
  26. 35
  27. 20
  28. Acute
  29. Obtuse
  30. 130
  31. 15
  32. 145
  33. 50
  34. Acute
  35. 120
  36. 120
  37. 125
  38. Acute
  39. 70
  40. 200

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