Simple problem. .
Two unit circles touch each other and a horizontal line segment.
What is the radius r of the largest circle that fits in the space bounded by these objects? .

Harder problem .
What is the greatest number of circles that can have each pair of circles tangent at a single point?
How many configurations are there?
Can you find a relationship among the radii of the circles?

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## bonanova

Simple problem..

Two unit circles touch each other and a horizontal line segment.

What is the radius

of the largest circle that fits in the space bounded by these objects?r.

Harder problem.

What is the greatest number of circles that can have each pair of circles tangent at a single point?

How many configurations are there?

Can you find a relationship among the radii of the circles?

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