## Geometry: Common Core (15th Edition)

In this diagram, we only have one line and one angle that are congruent in each triangle. One line is marked. We know that the angles are congruent because they are right angles, meaning they both measure $90^{\circ}$. Therefore, with just one angle and one side being congruent in each triangle, we do not have enough information to make the determination if the triangles are congruent.