# Isosceles Triangle: Quick Construction

## Directions:

In the app below,

- Construct a circle using the CIRCLE tool .
- Use the POINT ON OBJECT tool to plot 2 additional points that lie on this circle.
- Use the POLYGON tool to construct a polygon whose vertices are the circle's center and the two points you just constructed in step (2) above.

## Keep going: More directions appear below this app.

4. Select the MOVE tool now and move the vertices of this triangle around.
**How would you classify this triangle by its sides?
Why would you classify it this way?**

5. Select the ANGLE tool to find and display the measures of all 3 angles of this triangle. What do you notice? (Be sure to select the MOVE tool again so you can keep dragging the triangle's vertices around.)