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Class 6 Maths Worksheet: Angles and Geometry

Maths worksheets lesson 46: Basic geometry: angles and turns · Set 610 · 40 sums
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The method (Know the totals): Acute < 90°, right = 90°, obtuse between 90° and 180°, straight = 180°, reflex between 180° and 360°. Angles on a straight line add up to 180°; angles around a point add up to 360°. Each hour mark on a clock is 30° apart (360° ÷ 12). Turning clockwise from North: 90° → East, 180° → South, 270° → West.

NameDateTime takenScore ___ / 40
  1. 1.Four angles meet at a point. Three of them are 30°, 100° and 140°. What is the fourth angle (in degrees)?
  2. 2.An angle measures 90°. What kind of angle is it? (a) Right (b) Obtuse (c) Reflex
  3. 3.Four angles meet at a point. Three of them are 90°, 100° and 40°. What is the fourth angle (in degrees)?
  4. 4.Three angles together make a straight line. Two of them are 75° and 20°. What is the third angle (in degrees)?
  5. 5.An angle measures 140°. What kind of angle is it? (a) Acute (b) Reflex (c) Obtuse
  6. 6.The minute hand of a clock turns clockwise from 8 to 9. How many degrees does it turn?
  7. 7.You face South and turn anticlockwise through 90°. Which direction do you face now? (a) South (b) East (c) West (d) North
  8. 8.You face West and turn clockwise through 90°. Which direction do you face now? (a) North (b) East (c) West (d) South
  9. 9.An angle measures 260°. What kind of angle is it? (a) Reflex (b) Right (c) Straight
  10. 10.Three angles together make a straight line. Two of them are 70° and 45°. What is the third angle (in degrees)?
  11. 11.An angle measures 125°. What kind of angle is it? (a) Straight (b) Right (c) Obtuse
  12. 12.An angle measures 5°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  13. 13.An angle measures 180°. What kind of angle is it? (a) Reflex (b) Obtuse (c) Straight
  14. 14.A straight angle (180°) is split into 6 equal angles. How big is each angle (in degrees)?
  15. 15.An angle measures 30°. What kind of angle is it? (a) Reflex (b) Straight (c) Acute
  16. 16.You face North and turn anticlockwise through 90°. Which direction do you face now? (a) West (b) North (c) East (d) South
  17. 17.Three angles together make a straight line. Two of them are 20° and 150°. What is the third angle (in degrees)?
  18. 18.You face West and turn clockwise through 270°. Which direction do you face now? (a) West (b) East (c) South (d) North
  19. 19.A full turn (360°) is split into 4 equal angles. How big is each angle (in degrees)?
  20. 20.A straight angle (180°) is split into 12 equal angles. How big is each angle (in degrees)?
  21. 21.You face East and turn clockwise through 270°. Which direction do you face now? (a) East (b) South (c) West (d) North
  22. 22.The minute hand of a clock turns clockwise from 12 to 11. How many degrees does it turn?
  23. 23.The minute hand of a clock turns clockwise from 3 to 2. How many degrees does it turn?
  24. 24.Four angles meet at a point. Three of them are 60°, 80° and 150°. What is the fourth angle (in degrees)?
  25. 25.Three angles together make a straight line. Two of them are 65° and 60°. What is the third angle (in degrees)?
  26. 26.An angle measures 175°. What kind of angle is it? (a) Straight (b) Reflex (c) Obtuse
  27. 27.Four angles meet at a point. Three of them are 90°, 60° and 80°. What is the fourth angle (in degrees)?
  28. 28.The minute hand of a clock turns clockwise from 8 to 2. How many degrees does it turn?
  29. 29.Three angles together make a straight line. Two of them are 30° and 50°. What is the third angle (in degrees)?
  30. 30.Three angles together make a straight line. Two of them are 30° and 25°. What is the third angle (in degrees)?
  31. 31.The minute hand of a clock turns clockwise from 10 to 1. How many degrees does it turn?
  32. 32.An angle measures 160°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  33. 33.A straight angle (180°) is split into 4 equal angles. How big is each angle (in degrees)?
  34. 34.A straight angle (180°) is split into 9 equal angles. How big is each angle (in degrees)?
  35. 35.Three angles together make a straight line. Two of them are 60° and 105°. What is the third angle (in degrees)?
  36. 36.Four angles meet at a point. Three of them are 100°, 60° and 60°. What is the fourth angle (in degrees)?
  37. 37.The minute hand of a clock turns clockwise from 7 to 12. How many degrees does it turn?
  38. 38.Three angles together make a straight line. Two of them are 45° and 120°. What is the third angle (in degrees)?
  39. 39.An angle measures 50°. What kind of angle is it? (a) Acute (b) Obtuse (c) Reflex
  40. 40.Four angles meet at a point. Three of them are 100°, 40° and 160°. What is the fourth angle (in degrees)?

Answer key

  1. 90
  2. Right
  3. 130
  4. 85
  5. Obtuse
  6. 30
  7. East
  8. North
  9. Reflex
  10. 65
  11. Obtuse
  12. Acute
  13. Straight
  14. 30
  15. Acute
  16. West
  17. 10
  18. South
  19. 90
  20. 15
  21. North
  22. 330
  23. 330
  24. 70
  25. 55
  26. Obtuse
  27. 130
  28. 180
  29. 100
  30. 125
  31. 90
  32. Obtuse
  33. 45
  34. 20
  35. 15
  36. 140
  37. 150
  38. 15
  39. Acute
  40. 60

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