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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 219 · 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.Two angles together make a straight line. One of them is 100°. What is the other angle (in degrees)?
  2. 2.Three angles meet at a point. Two of them are 100° and 100°. What is the third angle (in degrees)?
  3. 3.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Right
  4. 4.Two angles together make a straight line. One of them is 110°. What is the other angle (in degrees)?
  5. 5.Three angles meet at a point. Two of them are 150° and 120°. What is the third angle (in degrees)?
  6. 6.Three angles meet at a point. Two of them are 60° and 50°. What is the third angle (in degrees)?
  7. 7.Three angles meet at a point. Two of them are 130° and 120°. What is the third angle (in degrees)?
  8. 8.What is the smaller angle between the hands of a clock at 6 o'clock (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 60° and 130°. What is the third angle (in degrees)?
  10. 10.Two angles together make a straight line. One of them is 10°. What is the other angle (in degrees)?
  11. 11.Two angles together make a straight line. One of them is 165°. What is the other angle (in degrees)?
  12. 12.Two angles of a triangle are 70° and 55°. What is the third angle (in degrees)?
  13. 13.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  15. 15.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  16. 16.Two angles of a triangle are 45° and 50°. What is the third angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 130° and 100°. What is the third angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 100° and 200°. What is the third angle (in degrees)?
  19. 19.Two angles together make a straight line. One of them is 130°. What is the other angle (in degrees)?
  20. 20.An angle measures 155°. What kind of angle is it? (a) Obtuse (b) Acute (c) Straight
  21. 21.A right angle is split into two angles. One of them is 60°. What is the other angle (in degrees)?
  22. 22.A right angle is split into two angles. One of them is 80°. What is the other angle (in degrees)?
  23. 23.Three angles meet at a point. Two of them are 140° and 110°. What is the third angle (in degrees)?
  24. 24.Two angles of a triangle are 55° and 120°. What is the third angle (in degrees)?
  25. 25.An angle measures 25°. What kind of angle is it? (a) Right (b) Obtuse (c) Acute
  26. 26.An angle measures 140°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  27. 27.Two angles of a triangle are 65° and 105°. What is the third angle (in degrees)?
  28. 28.Two angles of a triangle are 40° and 80°. What is the third angle (in degrees)?
  29. 29.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  30. 30.A right angle is split into two angles. One of them is 40°. What is the other angle (in degrees)?
  31. 31.Two angles together make a straight line. One of them is 60°. What is the other angle (in degrees)?
  32. 32.Two angles of a triangle are 30° and 25°. What is the third angle (in degrees)?
  33. 33.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  34. 34.Three angles meet at a point. Two of them are 100° and 50°. What is the third angle (in degrees)?
  35. 35.An angle measures 70°. What kind of angle is it? (a) Straight (b) Right (c) Acute
  36. 36.Two angles of a triangle are 30° and 90°. What is the third angle (in degrees)?
  37. 37.Two angles together make a straight line. One of them is 85°. What is the other angle (in degrees)?
  38. 38.Three angles meet at a point. Two of them are 120° and 80°. What is the third angle (in degrees)?
  39. 39.A right angle is split into two angles. One of them is 55°. What is the other angle (in degrees)?
  40. 40.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?

Answer key

  1. 80
  2. 160
  3. Straight
  4. 70
  5. 90
  6. 250
  7. 110
  8. 180
  9. 170
  10. 170
  11. 15
  12. 55
  13. 150
  14. 10
  15. Right
  16. 85
  17. 130
  18. 60
  19. 50
  20. Obtuse
  21. 30
  22. 10
  23. 110
  24. 5
  25. Acute
  26. Obtuse
  27. 10
  28. 60
  29. 65
  30. 50
  31. 120
  32. 125
  33. 70
  34. 210
  35. Acute
  36. 60
  37. 95
  38. 160
  39. 35
  40. 30

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