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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 378 · 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 140° and 130°. What is the third angle (in degrees)?
  2. 2.Two angles of a triangle are 25° and 95°. What is the third angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 80° and 50°. What is the third angle (in degrees)?
  4. 4.Two angles of a triangle are 70° and 30°. What is the third angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  6. 6.Two angles of a triangle are 65° and 65°. What is the third angle (in degrees)?
  7. 7.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  8. 8.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  9. 9.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  10. 10.An angle measures 115°. What kind of angle is it? (a) Acute (b) Right (c) Obtuse
  11. 11.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 150° and 50°. What is the third angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 75°. What is the other angle (in degrees)?
  17. 17.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  18. 18.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 80° and 180°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  21. 21.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  22. 22.Three angles meet at a point. Two of them are 70° and 230°. What is the third angle (in degrees)?
  23. 23.Two angles of a triangle are 55° and 100°. What is the third angle (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 70° and 90°. What is the third angle (in degrees)?
  26. 26.An angle measures 95°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  27. 27.Three angles meet at a point. Two of them are 70° and 110°. What is the third angle (in degrees)?
  28. 28.Two angles together make a straight line. One of them is 20°. What is the other 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 130°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  31. 31.Two angles of a triangle are 90° and 35°. What is the third angle (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 160°. What is the other angle (in degrees)?
  33. 33.Two angles of a triangle are 80° and 60°. What is the third angle (in degrees)?
  34. 34.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  35. 35.Two angles of a triangle are 60° and 100°. What is the third angle (in degrees)?
  36. 36.Three angles meet at a point. Two of them are 140° and 100°. What is the third angle (in degrees)?
  37. 37.An angle measures 25°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  38. 38.A right angle is split into two angles. One of them is 65°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 130° and 50°. What is the third angle (in degrees)?
  40. 40.An angle measures 180°. What kind of angle is it? (a) Straight (b) Right (c) Acute

Answer key

  1. 90
  2. 60
  3. 230
  4. 80
  5. 35
  6. 50
  7. 25
  8. 125
  9. 30
  10. Obtuse
  11. 150
  12. 45
  13. 55
  14. 140
  15. 160
  16. 105
  17. 60
  18. 40
  19. 100
  20. 10
  21. Right
  22. 60
  23. 25
  24. 180
  25. 200
  26. Obtuse
  27. 180
  28. 160
  29. 95
  30. Obtuse
  31. 55
  32. 20
  33. 40
  34. 10
  35. 20
  36. 120
  37. Acute
  38. 25
  39. 180
  40. Straight

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