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Java applet illustrating Pappus' Theorem

Pappus image: if you see this text the Java app is not working properly. Sorry!
The above applet, created using David Joyce's Geometry Applet software, shows Pappus' Theorem in action. Click on one of the end points (A, C, a or c) and drag the point to move the whole diagram, including the points of intersection X, Y and Z of the line pairs.


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