Geometry

6. A five-sided polygon.
7. A ten-sided polygon.
9. A four-sided polygon.
11. Two geometric objects having the same measure.
14. A line that divides a figure in half so that each half is the mirror image of the other.
15. A three-sided polygon.
16. An eight-sided polygon.
17. A straight one-dimensional figure having no thickness and extending infinitely in both directions.
18. An angle that measures 90º.
19. Part of a line that starts at a particular point and extends infinitely far in one direction.

1. A line that intersects a given segment at right angles and divides it into two equal parts.
2. A segment that connects two nonadjacent vertices of a polygon.
3. A set of points on a line consisting of two endpoints and all the points between them.
4. A nine-sided polygon.
5. A six-sided polygon
8. A seven-sided polygon.
10. A common endpoint of two sides of a polygon or an angle.
12. A series of connected line segments that starts and ends at the same place and does not intersect itself anywhere in between.
13. The distance around a figure.
14. A figure formed by two line segments or rays with a common endpoint.