Geometry Crossword

3. a straight line extending from the center of a circle or sphere to the circumference or surface
4. a polygon with four sides
9. an angle greater than 90 degrees but less than 180 degrees
10. a polygon having eight angles and eight sides
12. the line segment between two points on a given curve
13. a 90 degree angle
15. a rectangle having all four sides of equal length

1. a quadrilateral plane figure having two parallel and two nonparallel sides
2. a straight line passing through the center of a circle or sphere and meeting the circumference or surface at each end
5. an angle that is less than 90 degrees but more that 0 degrees
6. the intersection point of two sides of a plane figure
7. a polygon with 5 sides and 5 angles
8. an equilateral parallelogram having
11. a closed plane curve consisting of all points at a given distance from a point within it called the center
14. the part of a straight line considered as originating at a point on the line and as extending in one direction from that point