Geometry

3. a straight line extending from the center of a circle or sphere to the circumference or surface
4. a polygon with four sides
6. a rectangle having all four sides of equal length
7. a 90 degree angle
9. a quadrilateral plane figure having two parallel and two nonparallel sides
10. a triangle with all sides equal and all angles equal
11. the intersection point of two sides of a plane figure
12. an angle greater than 90 degrees but less than 180 degrees
14. an angle less than 90 degrees but greater than 0 degrees

1. a straight line passing through the center of a circle or sphere and meeting the circumference or surface at each end
2. a continuous extent of length
5. a polygon with 5 sides and 5 angles
6. a geometric figure such as a square, triangle, or rectangle.
8. line segments that do not intersect
13. the part of a straight line considered as originating at a point on the line and as extending in one direction from that point