Three Tangent Circles
- Judah L Schwartz
Three circles, each of which is tangent to the other two have their centers on a line. What is the size of the yellow area? You can explore this problem by moving the WHITE dot. **** 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?
adapted from Polya - Mathematical Discovery