Unit 2 Geometry

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Across
  1. 2. Rule or statement accepted without proof (5)
  2. 4. Cereal box shape (6)
  3. 6. Longest side on triangle (10)
  4. 8. Three sides in this shape (8)
  5. 9. Greek guy who liked right angled triangles! (10)
  6. 12. Like a pushed over rectangle shape (13)
  7. 14. Sets of coordinate pairs going steady! (12)
  8. 16. Lines joined like a T shape (13)
  9. 18. Rubik's shape (4)
  10. 20. Maths dealing with shapes and angles (8)
Down
  1. 1. An x or a y on the line (10)
  2. 3. Rule or statement with proof (7)
  3. 5. Like a square but longer on two sides (9)
  4. 7. Used to measure angles (10)
  5. 10. Lines like train tracks (8)
  6. 11. Tin of beans shape (8)
  7. 13. The world is one of these! (6)
  8. 15. One half reflects the other (8)
  9. 17. Round shape (6)
  10. 19. Shape of ice cream? (4)