# Does R Matter?

In the applet below, 2 concentric circles are shown. Both have center (0,0). Use this applet to answer the questions that follow.

## 1.

What can we conclude about the **yellow triangle** and **green triangle**?

## 2.

Why can we conclude what we did in (1) above?

## 3.

Given your responses for (1) and (2), what can we conclude about the values of the ratios and ? Why can we conclude this?

## 4.

Does your response to (3) change if the measure of the **purple angle** changes? Why or why not? Explain.