geometry word puzzle

2. of Symmetry / A line that divides a figure in half so that each half is the mirror image of the other.
4. / A four-sided polygon.
7. / A seven-sided polygon.
13. / Part of a line that starts at a particular point and extends infinitely far in one direction.
17. / A nine-sided polygon.
18. / A segment that connects two nonadjacent vertices of a polygon
19. / A straight one-dimensional figure having no thickness and extending infinitely in both directions.
20. / A common endpoint of two sides of a polygon or an angle.

1. / The distance around a figure.
3. / A five-sided polygon.
5. Segment / A set of points on a line consisting of two endpoints and all the points between them
6. / A series of connected line segments that starts and ends at the same place and does not intersect itself anywhere in between.
8. Bisector / A line that intersects a given segment at right angles and divides it into two equal parts.
9. / An eight-sided polygon.
10. / A three-sided polygon.
11. / A six-sided polygon.
12. / Two geometric objects having the same measure.
14. / the space between two intersecting lines or surfaces
15. / A figure formed by two line segments or rays with a common endpoint.
16. Angle / An angle that measures 90º.