3D shapes

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Across
  1. 2. An octagonal pyramid has 9 ... ?
  2. 4. when tea is poured correctly from a teapot,it flows through the ...
  3. 6. what are solids called when all their faces are polygons ?
  4. 7. it's a traditionnal British and Irish baked biscuit, popular in the UK, usually made of flour with baking powder then baked on a baking tray
  5. 8. I'm a solid and all my faces are rectangles
  6. 10. it's where 2 edges meet
Down
  1. 1. If a 3D shape is opened out flat, we get its ...
  2. 3. I'm a solid and my 4 faces are triangles
  3. 5. It's the art of representing three-dimensional objects on a two-dimensional surface
  4. 9. the form of the stones at the Giant's Causeway in Northern Ireland is hexagonal …..