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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 856 · 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 110°. What is the third angle (in degrees)?
  2. 2.Two angles of a triangle are 50° and 125°. What is the third angle (in degrees)?
  3. 3.An angle measures 180°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  4. 4.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  5. 5.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  6. 6.Two angles of a triangle are 45° and 110°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 50° and 190°. What is the third angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 70° and 50°. What is the third angle (in degrees)?
  9. 9.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 7 o'clock (in degrees)?
  11. 11.A right angle is split into two angles. One of them is 70°. What is the other angle (in degrees)?
  12. 12.A right angle is split into two angles. One of them is 75°. What is the other angle (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 40°. What is the other angle (in degrees)?
  14. 14.A right angle is split into two angles. One of them is 5°. What is the other angle (in degrees)?
  15. 15.An angle measures 90°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  16. 16.An angle measures 140°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  17. 17.Three angles meet at a point. Two of them are 100° and 130°. What is the third angle (in degrees)?
  18. 18.Two angles of a triangle are 90° and 70°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  20. 20.An angle measures 120°. What kind of angle is it? (a) Right (b) Straight (c) Obtuse
  21. 21.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 35°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 70° and 190°. What is the third angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  25. 25.What is the smaller angle between the hands of a clock at 4 o'clock (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 20°. What is the other angle (in degrees)?
  27. 27.Two angles together make a straight line. One of them is 15°. What is the other angle (in degrees)?
  28. 28.Two angles of a triangle are 90° and 35°. What is the third 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.Two angles of a triangle are 65° and 55°. What is the third angle (in degrees)?
  31. 31.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  32. 32.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?
  33. 33.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  34. 34.Two angles of a triangle are 85° and 55°. What is the third angle (in degrees)?
  35. 35.Three angles meet at a point. Two of them are 70° and 220°. What is the third angle (in degrees)?
  36. 36.An angle measures 35°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  37. 37.An angle measures 25°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  38. 38.An angle measures 60°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  39. 39.Two angles of a triangle are 45° and 100°. What is the third angle (in degrees)?
  40. 40.Three angles meet at a point. Two of them are 100° and 120°. What is the third angle (in degrees)?

Answer key

  1. 170
  2. 5
  3. Straight
  4. 75
  5. 150
  6. 25
  7. 120
  8. 240
  9. 180
  10. 150
  11. 20
  12. 15
  13. 140
  14. 85
  15. Right
  16. Obtuse
  17. 130
  18. 20
  19. 150
  20. Obtuse
  21. 60
  22. 55
  23. 100
  24. 25
  25. 120
  26. 160
  27. 165
  28. 55
  29. 95
  30. 60
  31. 60
  32. 130
  33. 90
  34. 40
  35. 70
  36. Acute
  37. Acute
  38. Acute
  39. 35
  40. 140

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