# Circle Investigation 1

- Author:
- Steve Phelps

- Topic:
- Circle

Drag point C on the left. As you drag point C, what happens in the graph on the right?
Click on the

**CAPTURE DATA**button to plot a data point, then move point C again. Repeat this a few times until you have a between 5 and 10 data points. What do you notice about the graph and the data points? How could you model this relationship? How do the parts of your model relate to the parts of the circle? Clear the data, then drag point B to change the radius of your circle and repeat the investigation, dragging C and plotting data points.