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Tangent Circles and Parallel Diameters
Let two circles with diameters BC and DE be tangent at point A. If BC || DE, then A, C, and E are collinear.
Contributed by:
Jay Warendorff
After work by:
Antonio Gutierrez
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The statement of the theorem is in
Archimedes Book of Lemmas: Proposition 1
.
RELATED LINKS
Collinear
(
Wolfram
MathWorld
)
Parallel
(
Wolfram
MathWorld
)
Tangent Circles
(
Wolfram
MathWorld
)
PERMANENT CITATION
"
Tangent Circles and Parallel Diameters
" from
the Wolfram Demonstrations Project
http://demonstrations.wolfram.com/TangentCirclesAndParallelDiameters/
Contributed by:
Jay Warendorff
After work by:
Antonio Gutierrez
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