# Circle in a triangle

- Author:
- Judah L Schwartz

- Topic:
- Circle

Why does the ratio of the area of the triangle A
to the the product of the perimeter of the triangle P and the
radius R of the inscribed circle remain constant?

Do you regard this applet as the basis for a student task in
algebra? geometry? both? neither?
Would you give this task to middle school students?
Why or why not?