Across
- 3. The set of all points inside a polygon
- 5. A polygon in which a diagonal can be drawn such that part of the diagonal contains points in the exterior of the polygon
- 14. Lines in the same plane that don't intersect
- 15. A polygon in which no diagonal contains points in the exterior of the polygon
- 16. A triangle with three acute angles
- 19. The common endpoint of the sides of the angle
- 21. One of the two parallel sides of a trapezoid
- 23. An angle that measures greater than 0 degrees and less than 90 degrees
- 24. Planes that don't intersect
- 25. A quadrilateral with four congruent sides
Down
- 1. A statement that has been proven
- 2. A three sided polygon
- 4. One of a pair of consecutive angles whose common side is a base of a trapezoid
- 6. The distance around the circle
- 7. Three or more lines that intersect at one point
- 8. The same distance from two or more objects
- 9. A quadrilateral with four right angles
- 10. Any side of a triangle
- 11. Two sides that form a right angle
- 12. A quadrilateral with exactly two pairs of congruent consecutive sides
- 13. One of the two nonparallel sides of a trapezoid
- 17. A quadrilateral with two pairs of parallel sides
- 18. To divide into two congruent parts
- 20. The set of all points outside a polygon
- 22. A segment connecting two nonconsecutive vertices of a polygon