# G.GCO.8 Corresponding Angles: Quick Investigation

- Author:
- Dan Dale, Tim Brzezinski

In the applet below, transversal

*n*intersects the lines*g*and*i*. Interact with the applet below for a few minutes. Then answer the questions that follow.## 1.

Use the **Slope** tool to measure the slopes of the two lines *g* and *i*. What do you notice?

## 2.

What does your observation from (1) tell you about lines *g* and *i*?

## 3.

If you haven't done so yet, drag the white point along transversal *n* as far as it will go. **What geometric transformation is taking place?**

## 4.

If a transversal (in this case, *n*) intersects 2 lines that have the property that you wrote in response to (2) above, what can you conclude about the pair of **orange corresponding angles **that were formed?