Across
- 4. a four-sided plane rectilinear figure with opposite sides parallel
- 6. a plane figure with three straight sides and three angles.
- 8. a two-dimensional figure formed by combining two or more basic two-dimensional shapes
- 9. the ratio of a circle's circumference to its diameter.
- 10. a round plane figure whose boundary (the circumference) consists of points equidistant from a fixed point (the center).
Down
- 1. the distance around the circle, also known as the perimeter of the circle
- 2. the amount of space enclosed within a two-dimensional shape or surface
- 3. a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.
- 5. the continuous line forming the boundary of a closed geometric figure
- 7. a straight line from the center to the circumference of a circle or sphere.