This was my first attempt at using a Desmos activity in my classroom. It is also the first activity I created myself.

In this activity, students use the Pythagorean Theorem. They will discover that the theorem only works for right triangles. Then use their knowledge to solve some real world problems.

This lesson was created because I noticed that my students were trying to use the Pythagorean Theorem for all sorts of triangles. Acute, Right, and OBTUSE! It occurred to me that I had never told my students that it only worked for right triangles. Then I asked myself, "Why should I tell them when they can discover it for themselves?"