3D shapes

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Across
  1. 4. A more common name for a hexahedron
  2. 7. The corner of a shape
  3. 8. A drawing in 2D that has different views
  4. 10. A 3 dimensional circle
  5. 11. Half a sphere
  6. 12. A cone with the top removed
  7. 14. Most soft drink cans are this shape
  8. 16. The top point of a pyramid
  9. 17. A 3D shape that has 20 equilateral triangle faces
  10. 19. The space inside a 3D object
Down
  1. 1. There are exactly 5 of these solids
  2. 2. Another type of 2D sketch
  3. 3. A 2D drawing of a 3D shape that does not have any horizontal lines
  4. 5. The mathematician is famous for theories about 3D shapes
  5. 6. A 3D shape with two congruent parallel faces
  6. 9. A 3D shape that has 4 equilateral triangle faces
  7. 13. A 3D shape that has an apex
  8. 15. A 2D shape used to make a model of a 3D solid
  9. 18. Another name for a rectangular prism