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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 858 · 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 80° and 90°. What is the third angle (in degrees)?
  2. 2.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  3. 3.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  4. 4.An angle measures 180°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  5. 5.Two angles of a triangle are 40° and 120°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 90° and 200°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 50° and 150°. What is the third angle (in degrees)?
  8. 8.Two angles of a triangle are 90° and 45°. What is the third angle (in degrees)?
  9. 9.Two angles together make a straight line. One of them is 125°. What is the other angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 65°. What is the other angle (in degrees)?
  11. 11.An angle measures 145°. What kind of angle is it? (a) Right (b) Obtuse (c) Straight
  12. 12.Three angles meet at a point. Two of them are 70° and 70°. What is the third angle (in degrees)?
  13. 13.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  14. 14.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  15. 15.Three angles meet at a point. Two of them are 50° and 50°. What is the third angle (in degrees)?
  16. 16.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  17. 17.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  18. 18.Two angles together make a straight line. One of them is 35°. What is the other angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 130° and 170°. What is the third angle (in degrees)?
  20. 20.An angle measures 50°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  21. 21.Three angles meet at a point. Two of them are 120° and 130°. What is the third angle (in degrees)?
  22. 22.Three angles meet at a point. Two of them are 150° and 140°. What is the third angle (in degrees)?
  23. 23.An angle measures 150°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  24. 24.A right angle is split into two angles. One of them is 85°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  26. 26.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  27. 27.An angle measures 35°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  28. 28.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  30. 30.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  31. 31.An angle measures 95°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  32. 32.An angle measures 15°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  33. 33.Three angles meet at a point. Two of them are 130° and 70°. What is the third angle (in degrees)?
  34. 34.An angle measures 80°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  35. 35.An angle measures 60°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  36. 36.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  37. 37.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  38. 38.Two angles of a triangle are 45° and 55°. What is the third angle (in degrees)?
  39. 39.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  40. 40.An angle measures 115°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute

Answer key

  1. 190
  2. 170
  3. 155
  4. Straight
  5. 20
  6. 70
  7. 160
  8. 45
  9. 55
  10. 115
  11. Obtuse
  12. 220
  13. Right
  14. 165
  15. 260
  16. 70
  17. 55
  18. 145
  19. 60
  20. Acute
  21. 110
  22. 70
  23. Obtuse
  24. 5
  25. 50
  26. 20
  27. Acute
  28. 85
  29. 150
  30. 150
  31. Obtuse
  32. Acute
  33. 160
  34. Acute
  35. Acute
  36. 10
  37. 90
  38. 80
  39. 120
  40. Obtuse

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