The Triangle Proportionality Theorem using a flow proof

1. Prove the Triangle Proportionality Theorem using a flow proof, paragraph or two-column proof.

If a line is parallel to one side of a triangle and also intersects the other two sides, the line divides the sides

proportionally.

2. State and Prove the Converse of the Triangle Proportionality Theorem

using a flow proof, paragraph or two-column proof.

3. Prove the Pythagorean Theorem with Similar Triangles using a two-column proof.
4. State and prove the Converse of the Pythagorean Theorem using a two-column proof.
5. Choose 1 of these 4 proofs and create a video presentation explaining the proof step by step. (You can write down what I should say)

Sample Solution