


Challenge 


Diameter:
The distance across a circle through its center. The line segment that includes the center and whose endpoints lie on the circle. 
Tangential Circles: Compare the area and circumference of a circle inscribed in a region between two intersecting circles.
Tangent Along the Diameter: Find the relationship between the area of a circle and the areas of the tangent circles along the circle's diameter.
Changes in the Circumference: Explore how changing the diameter of a circle affects its circumference.


