##### Across

**3.**Polygon with three sides**5.**Negate the converse of the original statement**8.**A Statement that can be proved easily using a theorem**10.**A line that a side of the polygon contains a point in the interior of the polygon**12.**A triangle with three congruent angles**15.**Negate both the hypothesis and the conclusion**16.**A rule accepted without proof**18.**A polygon with all sides and all angles congruent**19.**A closed plane figure that has three or more line segments

##### Down

**1.**No line that a side of the polygon contains a point in the interior of the polygon**2.**Opposite of the original statement**4.**An unproven statement based on observations**6.**A line that intersects two or more coplanar lines at different points**7.**Exchange of the hypothesis and conclusion of the original statement**9.**Part of a line that has an endpoint and all points extend in one direction**11.**A polygon that has all sides that are congruent**13.**A point that divides or bisects a segment into two congruent segments.**14.**A true statement that can be proven**17.**Rise over Run of a line**19.**A logical argument that shows a statement is true