Across
- 1. a three-dimensional figure made up of faces, vertices, and edges
- 3. a polyhedron with two parallel bases
- 5. a quadrilateral with two pairs of parallel and congruent sides and no right angles
- 8. a triangle with one 90 degrees angle
- 10. a polyhedron with one base
- 11. a quadrilateral with exactly one pair of parallel sides
- 13. a plane figure pattern which, when folded makes a solid
- 14. a four-sided polygon
Down
- 2. a triangle with one angle larger than 90 degrees
- 3. a closed figure with three or more sides
- 4. lines that intersect and form right angles
- 6. the number of cubic units needed to fill a polyhedron
- 7. the number of square units needed to cover a surface
- 9. the longest side of a right triangle
- 12. a triangle with all angles less than 90 degrees