Geometry terms

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Across
  1. 2. the distance from side to side in a figure (shorter)
  2. 3. 3D shape with 2 identical shapes facing each other
  3. 4. what a 3D shape would look like laid out
  4. 8. the amount of area covering outside of a 3D shape
  5. 10. the top to the bottom distance of a figure
  6. 13. the amount of area covering outside of a 3D shape excluding base and top
  7. 16. a figure with 4 equal sides
  8. 17. the space a flat surface takes up
  9. 18. longest distance across the circle
  10. 19. a closed curved 2 dimensional shape
Down
  1. 1. a quadrilateral with opposite sides parallel
  2. 5. a quadrilateral figure with 1 pair of parallel sides
  3. 6. a face or bottom of a figure
  4. 7. the distance from side to side (longer)
  5. 9. a figure with 4 sides but aren't all the same
  6. 11. a figure with 3 sides and 3 angles
  7. 12. the distance around a circle
  8. 14. base is a polygon while all other sides are triangles
  9. 15. amount of space a 3D object takes up