Across
- 3. a three-dimensional figure that encloses a space
- 7. a point where three or more edges intersect
- 10. a line segment where two faces intersect
- 11. a three-dimensional figure is a measure of the amount of space
- 12. figure, it is made up of triangles
Down
- 1. a polyhedron that has one base
- 2. a solid whose faces are all polygons
- 4. a polyhedron that has two parallel
- 5. a two-dimensional representation of a solid
- 6. ,a closed figure in a plane that is made up
- 8. a flat surface of a polyhedron
- 9. area, a solid is the sum of the areas