- Make a name box.
- Under Display set the preferences to centimeters for distance and tenths for precision.
- Use the circle tool and make five different circles, varying the size of each.
- Select each circle and construct its interior. While the interior is flashing, select a color from the display menu. Make each circle a different color.
- Under graph click on
- Create Axes
- Snap To Grid
- Show Grid

- Move the center of each circle to a lattice point. Move the defining point of each circle to a lattice point.
- Record:
**Color of Circle****Center of Circle****Radius** - Select each circle. Be careful not to select the interior. Under Measure select Equation.
- Move each equation, placing it by its corresponding circle.
- Explain how the center and the radius are incorporated in the equation.
Write the equation for a circle with center (-1, 5) and radius = 3.

**Print**. Remember to check**Print Preview**first!- Now useing the select tool, drag the five equations to the upper right corner of your screen.
- Switch computer stations and match the equations to the circles. Explain how you know your equations are on the right circles.