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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 247 · 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 150° and 90°. What is the third angle (in degrees)?
  2. 2.Two angles of a triangle are 50° and 110°. What is the third angle (in degrees)?
  3. 3.Three angles meet at a point. Two of them are 130° and 130°. What is the third angle (in degrees)?
  4. 4.Two angles of a triangle are 30° and 70°. What is the third angle (in degrees)?
  5. 5.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 60° and 200°. What is the third angle (in degrees)?
  7. 7.Two angles of a triangle are 20° and 30°. What is the third angle (in degrees)?
  8. 8.An angle measures 35°. What kind of angle is it? (a) Acute (b) Straight (c) Right
  9. 9.An angle measures 180°. What kind of angle is it? (a) Acute (b) Obtuse (c) Straight
  10. 10.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 135°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 45° and 120°. What is the third angle (in degrees)?
  13. 13.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  14. 14.What is the smaller angle between the hands of a clock at 9 o'clock (in degrees)?
  15. 15.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  16. 16.Two angles of a triangle are 60° and 105°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 80° and 200°. What is the third angle (in degrees)?
  18. 18.What is the smaller angle between the hands of a clock at 3 o'clock (in degrees)?
  19. 19.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  20. 20.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  21. 21.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  22. 22.An angle measures 170°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  23. 23.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  24. 24.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  25. 25.Two angles together make a straight line. One of them is 120°. What is the other angle (in degrees)?
  26. 26.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  27. 27.Three angles meet at a point. Two of them are 60° and 130°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 80° and 95°. What is the third angle (in degrees)?
  29. 29.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  31. 31.An angle measures 30°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  32. 32.Two angles together make a straight line. One of them is 115°. What is the other angle (in degrees)?
  33. 33.Three angles meet at a point. Two of them are 120° and 120°. What is the third angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 80° and 90°. What is the third angle (in degrees)?
  35. 35.Two angles of a triangle are 75° and 30°. What is the third angle (in degrees)?
  36. 36.Two angles of a triangle are 65° and 90°. What is the third angle (in degrees)?
  37. 37.Two angles of a triangle are 55° and 90°. What is the third angle (in degrees)?
  38. 38.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?
  40. 40.Two angles together make a straight line. One of them is 50°. What is the other angle (in degrees)?

Answer key

  1. 120
  2. 20
  3. 100
  4. 80
  5. 70
  6. 100
  7. 130
  8. Acute
  9. Straight
  10. 75
  11. 45
  12. 15
  13. Right
  14. 90
  15. 40
  16. 15
  17. 80
  18. 90
  19. 60
  20. 60
  21. 120
  22. Obtuse
  23. 30
  24. 70
  25. 60
  26. 80
  27. 170
  28. 5
  29. 30
  30. 45
  31. Acute
  32. 65
  33. 120
  34. 190
  35. 75
  36. 25
  37. 35
  38. 60
  39. 210
  40. 130

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