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Three Touching Circles on a Line
The radius of the middle circle (purple) of three circles all touching each other and a line is given by a formula in terms of the radii of the two outside circles. Drag the points to vary the outside circles.
Contributed by:
Noel Patson
THINGS TO TRY
Drag Locators
Automatic Animation
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Idea taken from
Sangaku
.
RELATED LINKS
Tangent Circles
(
Wolfram
MathWorld
)
PERMANENT CITATION
"
Three Touching Circles on a Line
" from
the Wolfram Demonstrations Project
http://demonstrations.wolfram.com/ThreeTouchingCirclesOnALine/
Contributed by:
Noel Patson
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