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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 105 · 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 50° and 240°. What is the third angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 100° and 130°. What is the third angle (in degrees)?
  3. 3.An angle measures 90°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  4. 4.A right angle is split into two angles. One of them is 10°. What is the other angle (in degrees)?
  5. 5.An angle measures 100°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  6. 6.Three angles meet at a point. Two of them are 150° and 130°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 60° and 70°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 75° and 50°. What is the third angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  10. 10.Three angles meet at a point. Two of them are 50° and 220°. What is the third angle (in degrees)?
  11. 11.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  12. 12.Three angles meet at a point. Two of them are 150° and 90°. What is the third angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  14. 14.Three angles meet at a point. Two of them are 60° and 140°. What is the third angle (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  16. 16.Two angles of a triangle are 30° and 30°. What is the third angle (in degrees)?
  17. 17.Two angles of a triangle are 85° and 55°. What is the third angle (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  22. 22.Two angles of a triangle are 20° and 65°. What is the third angle (in degrees)?
  23. 23.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  24. 24.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  25. 25.An angle measures 105°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  26. 26.Two angles of a triangle are 35° and 45°. What is the third angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 90° and 200°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 20° and 105°. What is the third angle (in degrees)?
  29. 29.An angle measures 170°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  30. 30.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  31. 31.An angle measures 155°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  32. 32.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  34. 34.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 40° and 20°. What is the third angle (in degrees)?
  36. 36.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  37. 37.An angle measures 65°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  38. 38.Two angles of a triangle are 30° and 20°. What is the third angle (in degrees)?
  39. 39.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  40. 40.An angle measures 15°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse

Answer key

  1. 70
  2. 130
  3. Right
  4. 80
  5. Obtuse
  6. 80
  7. 230
  8. 55
  9. 120
  10. 90
  11. Straight
  12. 120
  13. 165
  14. 160
  15. 45
  16. 120
  17. 40
  18. 30
  19. 30
  20. 90
  21. 90
  22. 95
  23. 70
  24. 35
  25. Obtuse
  26. 100
  27. 70
  28. 55
  29. Obtuse
  30. 60
  31. Obtuse
  32. 150
  33. 65
  34. 160
  35. 120
  36. 5
  37. Acute
  38. 130
  39. 100
  40. Acute

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