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Class 6 Maths Worksheet: Angles and Geometry

Maths worksheets lesson 46: Basic geometry: angles and turns · Set 493 · 40 sums
TalentJR

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 180°. What kind of angle is it? (a) Reflex (b) Acute (c) Straight
  2. 2.Three angles together make a straight line. Two of them are 55° and 30°. What is the third angle (in degrees)?
  3. 3.Three angles together make a straight line. Two of them are 30° and 10°. What is the third angle (in degrees)?
  4. 4.A straight angle (180°) is split into 9 equal angles. How big is each angle (in degrees)?
  5. 5.A straight angle (180°) is split into 12 equal angles. How big is each angle (in degrees)?
  6. 6.An angle measures 300°. What kind of angle is it? (a) Right (b) Reflex (c) Acute
  7. 7.An angle measures 35°. What kind of angle is it? (a) Right (b) Acute (c) Obtuse
  8. 8.Three angles together make a straight line. Two of them are 15° and 95°. What is the third angle (in degrees)?
  9. 9.You face West and turn clockwise through 270°. Which direction do you face now? (a) North (b) South (c) East (d) West
  10. 10.An angle measures 95°. What kind of angle is it? (a) Straight (b) Acute (c) Obtuse
  11. 11.Four angles meet at a point. Three of them are 30°, 90° and 110°. What is the fourth angle (in degrees)?
  12. 12.A full turn (360°) is split into 9 equal angles. How big is each angle (in degrees)?
  13. 13.Three angles together make a straight line. Two of them are 65° and 75°. What is the third angle (in degrees)?
  14. 14.The minute hand of a clock turns clockwise from 11 to 1. How many degrees does it turn?
  15. 15.A full turn (360°) is split into 5 equal angles. How big is each angle (in degrees)?
  16. 16.Three angles together make a straight line. Two of them are 60° and 50°. What is the third angle (in degrees)?
  17. 17.Four angles meet at a point. Three of them are 40°, 30° and 80°. What is the fourth angle (in degrees)?
  18. 18.The minute hand of a clock turns clockwise from 4 to 9. How many degrees does it turn?
  19. 19.You face South and turn anticlockwise through 90°. Which direction do you face now? (a) North (b) South (c) East (d) West
  20. 20.Three angles together make a straight line. Two of them are 20° and 45°. What is the third angle (in degrees)?
  21. 21.Three angles together make a straight line. Two of them are 45° and 120°. What is the third angle (in degrees)?
  22. 22.Three angles together make a straight line. Two of them are 65° and 40°. What is the third angle (in degrees)?
  23. 23.Four angles meet at a point. Three of them are 60°, 50° and 100°. What is the fourth angle (in degrees)?
  24. 24.Three angles together make a straight line. Two of them are 75° and 80°. What is the third angle (in degrees)?
  25. 25.You face North and turn clockwise through 90°. Which direction do you face now? (a) West (b) East (c) South (d) North
  26. 26.An angle measures 100°. What kind of angle is it? (a) Obtuse (b) Right (c) Straight
  27. 27.The minute hand of a clock turns clockwise from 10 to 9. How many degrees does it turn?
  28. 28.Four angles meet at a point. Three of them are 90°, 90° and 110°. What is the fourth angle (in degrees)?
  29. 29.An angle measures 90°. What kind of angle is it? (a) Obtuse (b) Straight (c) Right
  30. 30.An angle measures 195°. What kind of angle is it? (a) Obtuse (b) Reflex (c) Straight
  31. 31.Four angles meet at a point. Three of them are 50°, 100° and 170°. What is the fourth angle (in degrees)?
  32. 32.An angle measures 160°. What kind of angle is it? (a) Right (b) Reflex (c) Obtuse
  33. 33.An angle measures 20°. What kind of angle is it? (a) Acute (b) Straight (c) Obtuse
  34. 34.Three angles together make a straight line. Two of them are 35° and 130°. What is the third angle (in degrees)?
  35. 35.A straight angle (180°) is split into 6 equal angles. How big is each angle (in degrees)?
  36. 36.Three angles together make a straight line. Two of them are 25° and 55°. What is the third angle (in degrees)?
  37. 37.A full turn (360°) is split into 8 equal angles. How big is each angle (in degrees)?
  38. 38.Four angles meet at a point. Three of them are 50°, 30° and 230°. What is the fourth angle (in degrees)?
  39. 39.Three angles together make a straight line. Two of them are 20° and 115°. What is the third angle (in degrees)?
  40. 40.An angle measures 275°. What kind of angle is it? (a) Straight (b) Reflex (c) Acute

Answer key

  1. Straight
  2. 95
  3. 140
  4. 20
  5. 15
  6. Reflex
  7. Acute
  8. 70
  9. South
  10. Obtuse
  11. 130
  12. 40
  13. 40
  14. 60
  15. 72
  16. 70
  17. 210
  18. 150
  19. East
  20. 115
  21. 15
  22. 75
  23. 150
  24. 25
  25. East
  26. Obtuse
  27. 330
  28. 70
  29. Right
  30. Reflex
  31. 40
  32. Obtuse
  33. Acute
  34. 15
  35. 30
  36. 100
  37. 45
  38. 50
  39. 45
  40. Reflex

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