Geometry Crossword Puzzle

2. The point that divides a segment into two congruent segments.
3. The distance around the outside of a circle
7. A four-sided shape. Opposite sides are congruent and parallel.
9. All four sides are congruent and parallel. There are four right angles.
11. The opposite sides are parallel and congruent. The shape has four right angles.
18. Points that lie on the same line.
19. Any shape that is a polygon and has four sides.
20. The measurement of the outside of a 2D shape.

1. A straight path that goes on forever in both directions.
4. Two lines that cross each other.
5. Any object made of at least three straight lines. There can be no gaps, no curves, and no lines that cross each other.
6. To cut into two congruent parts
8. It has an endpoint on one side and keeps going forever on the other.
10. The amount of space occupied by a 3D object
12. Any three or more points that lie in the same plane.
13. The unit used to measure an angle.
14. The space inside an enclosed 2D shape.
15. The point where two rays or line segments meet to form an angle.
16. A flat surface that keeps spreading in all directions forever. Must be named by three points.
17. A specific place marked by a dot and usually named with a letter.