8.4 Proving △ Similarity by AA

Objective: Today we will use the Angle-Angle Similarity Theorem and we will solve real-life problems.

Warm-up: Find the values of 𝑥 and 𝑦 when the two polygons are similar.

8.5 Proving △ Similarity by SSS & SAS

Objective: Today we will use the Side-Side-Side Similarity Theorem and use the Side-Angle-Side Similarity Theorem.

Checkpoint: Write a two-column proof to show that ∆𝐿𝑀𝑁~∆𝑄𝑃𝑁 without using vertical angles.

Statements Reasons 1. 1. Given 2. 2. 3. ∆𝐿𝑀𝑁~∆𝑄𝑃𝑁 3.