Three Circles Defined by Chords
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Through a point on a circle draw three chords. Using each chord as a diameter, draw three circles. The pairwise intersections of the circles are collinear.[more]
Drag the red points to change the figure.[less]
Contributed by: Jay Warendorff (March 2011)
Open content licensed under CC BY-NC-SA
See problem 9 in Classical Theorems in Plane Geometry.
"Three Circles Defined by Chords"
Wolfram Demonstrations Project
Published: March 7 2011