Across
- 1. a polygon such that no line containing a side of the polygon contains a point in the interior of the polygon
- 6. a point that divides or bisects a segment into two congruent segments
- 8. a ray that divides an angle into two angles that are congruent
- 9. statements that are accepted without further justification or explanation
- 10. two adjacent angles whose noncommon sides are opposite rays
- 11. two points are needed
- 12. a polygon that is not a convex .
Down
- 2. a polygon with all of its interior angles congruent
- 3. angle with the measure between 90 and 180 degrees.
- 4. extends indefinitely in all directions
- 5. three acute angles
- 7. has no dimension , no length , width , or thickness