The Chordal Theorem
Initializing live version

Requires a Wolfram Notebook System
Interact on desktop, mobile and cloud with the free Wolfram Player or other Wolfram Language products.
Suppose two circles with centers A and B intersect at C and D. Then, AB is perpendicular to CD.
Contributed by: Jay Warendorff (March 2011)
Open content licensed under CC BY-NC-SA
Snapshots
Details
detailSectionParagraphPermanent Citation
"The Chordal Theorem"
http://demonstrations.wolfram.com/TheChordalTheorem/
Wolfram Demonstrations Project
Published: March 7 2011