Geometry Terms

4. A polygon with four sides.
5. A parallelogram having four right angles.
10. Two line segments which cross to form 90 degree angles.
13. A polygon with 5 sides and 5 angles.
14. An equilateral parallelogram having oblique angles.
15. The intersection point of two sides and angles.
17. A polygon having eight sides.
18. The line segment between two points on a given curve.
19. A quadrilateral plane figure having two parallel and two nonparallel sides.
21. This happens when two lines cross.
22. A position of space.

1. A flat surface that extends endlessly in all directions.
2. A quadrilateral having both pairs of opposite sides parallel to each other.
3. A rectangle having all four sides of equal length.
5. The part of a straight line considered as originating at a point on the line and is extending in one direction from the point.
6. A close plane curve consisting of all points at a given distance from a point within it called the center.
7. Two angles are this when their sum is 90 degrees.
8. A polygon having six sides and six angles.
9. A continuous extent of length
11. Consists of two rays that have a common endpoint called the vertex.
12. Two angles are this if the sum of two angles are 180 degrees.
16. A 90 degree angle.
20. A straight line passing through the center of a circle or sphere meeting at the circumference or surface at each end.