# Circle between quarter circles

- Author:
- Judah L Schwartz

The figure shows two quarter circles in a square and a circle that is tangent to the quarter circles and to a side of the square.
The GREEN dot controls the size of the square. The BLUE dot controls the size of the circle.
Can this figure be drawn with ruler & compass? If so, how? If not, why not?

**What questions could/would you put to your students based on this applet?**Inspired by Mind Your Decisions.