Across
- 1. A flattened out three dimensional solid.
- 4. A four-sided plane rectilinear figure with opposite sides parallel.
- 7. A mathematical relationship or rule expressed in symbols.
- 8. A line or surface on which a figure is regarded as standing.
Down
- 2. The outside limit of an object, area, or surface.
- 3. A parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides.
- 5. The branch of mathematics concerned with the properties an relation of points, lines, surfaces, solids, and other dimensional analogs.
- 6. Each of the surfaces of a solid.