crossword

4. A polygon in which all sides are congruent.
6. The angle and sides in similar or congruent figures that match.
9. Have three acute angles.
10. Two angles that are on the inside of two lines and are on opposite sides of a transversal.
12. A line that intersects two or more lines in the same plane.
13. The angle between a side of a rectilinear figure and as adjacent side extended outward.
14. Two shapes that have the exact same shape and the exact same size.
15. An exterior angle of a triangle, or any polygon, is formed by extending one of the sides of the triangle/polygon.
17. A triangle that has two or more congruent sides.
18. A triangle with one right angle.

1. A polygon in which all angles are congruent.
2. Two non-adjacent angles that are on the same side of a transversal with one angle inside the two lines and the other on the outside of the two lines.
3. Two angles that are on the inside of two lines and are on the same side of a transversal.
5. A triangle that has no congruent sides.
7. Two angles that are on the outside of two lines and are on opposite sides of a transversal.
8. Two figures that have the exact same shape, but not necessarily the exact same size.
11. A triangle that has one obtuse angle.
16. A relationship in mathematics that has been proven.