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Class 6 Maths Worksheet: Angles and Geometry

Maths worksheets lesson 46: Basic geometry: angles and turns · Set 557 · 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.An angle measures 20°. What kind of angle is it? (a) Obtuse (b) Right (c) Acute
  2. 2.An angle measures 90°. What kind of angle is it? (a) Straight (b) Reflex (c) Right
  3. 3.A full turn (360°) is split into 10 equal angles. How big is each angle (in degrees)?
  4. 4.A straight angle (180°) is split into 10 equal angles. How big is each angle (in degrees)?
  5. 5.An angle measures 25°. What kind of angle is it? (a) Acute (b) Obtuse (c) Right
  6. 6.Four angles meet at a point. Three of them are 80°, 60° and 160°. What is the fourth angle (in degrees)?
  7. 7.An angle measures 30°. What kind of angle is it? (a) Reflex (b) Straight (c) Acute
  8. 8.A full turn (360°) is split into 5 equal angles. How big is each angle (in degrees)?
  9. 9.A straight angle (180°) is split into 3 equal angles. How big is each angle (in degrees)?
  10. 10.An angle measures 105°. What kind of angle is it? (a) Reflex (b) Acute (c) Obtuse
  11. 11.Four angles meet at a point. Three of them are 30°, 100° and 100°. What is the fourth angle (in degrees)?
  12. 12.Three angles together make a straight line. Two of them are 15° and 135°. What is the third angle (in degrees)?
  13. 13.Three angles together make a straight line. Two of them are 10° and 115°. What is the third angle (in degrees)?
  14. 14.An angle measures 210°. What kind of angle is it? (a) Straight (b) Reflex (c) Obtuse
  15. 15.An angle measures 175°. What kind of angle is it? (a) Obtuse (b) Reflex (c) Acute
  16. 16.Four angles meet at a point. Three of them are 100°, 50° and 80°. What is the fourth angle (in degrees)?
  17. 17.You face West and turn anticlockwise through 270°. Which direction do you face now? (a) East (b) West (c) South (d) North
  18. 18.You face West and turn clockwise through 270°. Which direction do you face now? (a) North (b) East (c) West (d) South
  19. 19.Four angles meet at a point. Three of them are 80°, 30° and 220°. What is the fourth angle (in degrees)?
  20. 20.A full turn (360°) is split into 9 equal angles. How big is each angle (in degrees)?
  21. 21.Three angles together make a straight line. Two of them are 65° and 105°. What is the third angle (in degrees)?
  22. 22.A straight angle (180°) is split into 12 equal angles. How big is each angle (in degrees)?
  23. 23.Three angles together make a straight line. Two of them are 80° and 45°. What is the third angle (in degrees)?
  24. 24.Four angles meet at a point. Three of them are 70°, 70° and 200°. What is the fourth angle (in degrees)?
  25. 25.The minute hand of a clock turns clockwise from 12 to 8. How many degrees does it turn?
  26. 26.Three angles together make a straight line. Two of them are 100° and 40°. What is the third angle (in degrees)?
  27. 27.Four angles meet at a point. Three of them are 40°, 90° and 140°. What is the fourth angle (in degrees)?
  28. 28.Four angles meet at a point. Three of them are 30°, 50° and 190°. What is the fourth angle (in degrees)?
  29. 29.An angle measures 205°. What kind of angle is it? (a) Straight (b) Reflex (c) Acute
  30. 30.Four angles meet at a point. Three of them are 60°, 40° and 70°. What is the fourth angle (in degrees)?
  31. 31.A full turn (360°) is split into 8 equal angles. How big is each angle (in degrees)?
  32. 32.Four angles meet at a point. Three of them are 100°, 70° and 110°. What is the fourth angle (in degrees)?
  33. 33.Three angles together make a straight line. Two of them are 35° and 130°. What is the third angle (in degrees)?
  34. 34.Three angles together make a straight line. Two of them are 30° and 140°. What is the third angle (in degrees)?
  35. 35.Three angles together make a straight line. Two of them are 70° and 45°. What is the third angle (in degrees)?
  36. 36.Four angles meet at a point. Three of them are 80°, 60° and 60°. What is the fourth angle (in degrees)?
  37. 37.An angle measures 75°. What kind of angle is it? (a) Right (b) Reflex (c) Acute
  38. 38.The minute hand of a clock turns clockwise from 3 to 11. How many degrees does it turn?
  39. 39.Four angles meet at a point. Three of them are 50°, 70° and 130°. What is the fourth angle (in degrees)?
  40. 40.An angle measures 180°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse

Answer key

  1. Acute
  2. Right
  3. 36
  4. 18
  5. Acute
  6. 60
  7. Acute
  8. 72
  9. 60
  10. Obtuse
  11. 130
  12. 30
  13. 55
  14. Reflex
  15. Obtuse
  16. 130
  17. North
  18. South
  19. 30
  20. 40
  21. 10
  22. 15
  23. 55
  24. 20
  25. 240
  26. 40
  27. 90
  28. 90
  29. Reflex
  30. 190
  31. 45
  32. 80
  33. 15
  34. 10
  35. 65
  36. 160
  37. Acute
  38. 240
  39. 110
  40. Straight

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