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Class 5 Maths Worksheet: Angles

Maths worksheets lesson 39: Angles · Set 537 · 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.An angle measures 180°. What kind of angle is it? (a) Right (b) Straight (c) Acute
  2. 2.Two angles of a triangle are 60° and 35°. What is the third angle (in degrees)?
  3. 3.A right angle is split into two angles. One of them is 45°. What is the other angle (in degrees)?
  4. 4.Two angles of a triangle are 65° and 95°. What is the third angle (in degrees)?
  5. 5.An angle measures 105°. What kind of angle is it? (a) Obtuse (b) Straight (c) Acute
  6. 6.A right angle is split into two angles. One of them is 30°. What is the other angle (in degrees)?
  7. 7.A right angle is split into two angles. One of them is 15°. What is the other angle (in degrees)?
  8. 8.Three angles meet at a point. Two of them are 100° and 190°. What is the third angle (in degrees)?
  9. 9.Three angles meet at a point. Two of them are 150° and 90°. What is the third angle (in degrees)?
  10. 10.What is the smaller angle between the hands of a clock at 2 o'clock (in degrees)?
  11. 11.Two angles of a triangle are 65° and 60°. What is the third angle (in degrees)?
  12. 12.What is the smaller angle between the hands of a clock at 10 o'clock (in degrees)?
  13. 13.Two angles together make a straight line. One of them is 25°. What is the other angle (in degrees)?
  14. 14.Two angles together make a straight line. One of them is 80°. What is the other angle (in degrees)?
  15. 15.Two angles of a triangle are 40° and 115°. What is the third angle (in degrees)?
  16. 16.Two angles together make a straight line. One of them is 170°. What is the other angle (in degrees)?
  17. 17.Three angles meet at a point. Two of them are 60° and 110°. What is the third angle (in degrees)?
  18. 18.Three angles meet at a point. Two of them are 50° and 100°. What is the third angle (in degrees)?
  19. 19.Three angles meet at a point. Two of them are 50° and 130°. What is the third angle (in degrees)?
  20. 20.Two angles together make a straight line. One of them is 155°. What is the other angle (in degrees)?
  21. 21.Two angles of a triangle are 30° and 50°. What is the third angle (in degrees)?
  22. 22.An angle measures 75°. What kind of angle is it? (a) Right (b) Acute (c) Straight
  23. 23.What is the smaller angle between the hands of a clock at 5 o'clock (in degrees)?
  24. 24.What is the smaller angle between the hands of a clock at 8 o'clock (in degrees)?
  25. 25.Three angles meet at a point. Two of them are 100° and 90°. What is the third angle (in degrees)?
  26. 26.An angle measures 130°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  27. 27.A right angle is split into two angles. One of them is 20°. What is the other angle (in degrees)?
  28. 28.What is the smaller angle between the hands of a clock at 1 o'clock (in degrees)?
  29. 29.Three angles meet at a point. Two of them are 80° and 110°. What is the third angle (in degrees)?
  30. 30.What is the smaller angle between the hands of a clock at 11 o'clock (in degrees)?
  31. 31.An angle measures 25°. What kind of angle is it? (a) Straight (b) Obtuse (c) Acute
  32. 32.A right angle is split into two angles. One of them is 25°. What is the other angle (in degrees)?
  33. 33.An angle measures 30°. What kind of angle is it? (a) Obtuse (b) Acute (c) Right
  34. 34.Three angles meet at a point. Two of them are 90° and 170°. What is the third angle (in degrees)?
  35. 35.A right angle is split into two angles. One of them is 50°. What is the other angle (in degrees)?
  36. 36.Two angles together make a straight line. One of them is 30°. What is the other angle (in degrees)?
  37. 37.Three angles meet at a point. Two of them are 140° and 70°. What is the third angle (in degrees)?
  38. 38.Two angles together make a straight line. One of them is 55°. What is the other angle (in degrees)?
  39. 39.Three angles meet at a point. Two of them are 110° and 70°. What is the third angle (in degrees)?
  40. 40.An angle measures 90°. What kind of angle is it? (a) Straight (b) Acute (c) Right

Answer key

  1. Straight
  2. 85
  3. 45
  4. 20
  5. Obtuse
  6. 60
  7. 75
  8. 70
  9. 120
  10. 60
  11. 55
  12. 60
  13. 155
  14. 100
  15. 25
  16. 10
  17. 190
  18. 210
  19. 180
  20. 25
  21. 100
  22. Acute
  23. 150
  24. 120
  25. 170
  26. Obtuse
  27. 70
  28. 30
  29. 170
  30. 30
  31. Acute
  32. 65
  33. Acute
  34. 100
  35. 40
  36. 150
  37. 150
  38. 125
  39. 180
  40. Right

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