Across
- 3. a polygon having four sides, four angles and four vertices
- 8. the perimeter of a circle or ellipse
- 9. a straight one-dimensional figure that does not have a thickness, and it extends endlessly in both directions
- 10. a special type of quadrilateral that had both pairs of opposite sides parallel and equal
Down
- 1. part of a line that has a fixed starting point but no endpoint
- 2. the total space taken up by a flat (2-D) surface or shape of an object
- 4. the distance from the center of the circle to any point on its circumference
- 5. formed when two straight lines or rays meet at a common endpoint
- 6. the length of a straight line through the center of an object or space
- 7. a point on a polygon where the sides or edges of the object meet or where two rays or line segments meet