Mostly this lesson is an excuse to play another round of the Proof Game.

Geometry 5(A) investigate patterns to make conjectures about geometric relationships, including angles formed by parallel lines cut by a transversal, criteria required for triangle congruence, special segments of triangles, diagonals of quadrilaterals, interior and exterior angles of polygons, and special segments and angles of circles choosing from a variety of tools

Geometry 5(C) use the constructions of congruent segments, congruent angles, angle bisectors, and perpendicular bisectors to make conjectures about geometric relationships

Geometry 6(B) prove two triangles are congruent by applying the Side-Angle-Side, Angle-Side-Angle,Side-Side-Side, Angle-Angle-Side, and Hypotenuse-Leg congruence conditions

Geometry 6(C) apply the definition of congruence, in terms of rigid transformations, to identify congruent figures and their corresponding sides and angles