Geometry - Similar Triangle Proofs

Similar Triangle Proofs:

If 2 angles of one triangle are congruent to two corresponding angles of a second triangle, then the third angles are congruent.

There are 3 ways to show triangle similarity:



Let's try a proof:

Let's try another:

Geometry HW #14

For my Geometry Class: here is homework #14, questions 1 & 2 Quadrilateral Proofs