Across
- 4. A closed four-sided figure with parallel opposite sides. Sometimes called a diamond
- 6. 2 lines that meet to make a corner
- 10. a closed figure with 3 sides
- 11. a closed figure with 8 sides
- 12. the meeting of two faces on a three-dimensional shape
- 13. an informal word to describe angles of objects
- 14. without a curve
Down
- 1. a three-dimensional figure with identical equilateral squares as faces
- 2. a solid or hollow object that tapers from a circular or roughly circular base to a point
- 3. identical in form
- 4. another name for 90-degree angle
- 5. a round body whose surface is at all points equidistant from the center
- 7. surface planes of three-dimensional shapes
- 8. having a plane-like quality
- 9. a specific position on a line, plane, or in space