# Incenter + Incircle Action (V2)!

In the app below, you can change the size of the triangle by moving any one (or more) of its vertices.

**You can also alter the size of the angle in the lower left corner by using the smaller slider.**(You can also zoom in/out.)## 1.

What vocabulary term would you use to describe the segments that have this triangle's vertices as its endpoints? Why?

## 2.

How do these 3 segments intersect? Describe.

## 3.

**The point you see inside the triangle is called the INCENTER of this triangle.**
Notice there are 3 equal distances in this triangle. How would you describe these equal distances in your own words?
That is, each of these distances is the distance from the _________ to ___________?

## 4.

Why do your observation(s) and response to (3) above hold true? What previously learned theorem justifies this?