triangle ABC with A at 0 comma 0, B at 2 comma 4 and C at 0 comma 2, the measure of angle C is 135 degrees, and the measure of angle B is 30 degrees, triangle DEF with D at 2 comma 0, E at 4 comma 4 and F at 4 comma 2, the measure of angle F is 135 degrees, and the measure of angle D is 30 degrees Name the congruent triangles and justify the reason for congruence