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The Seven Theorems

Tangent lengths Fifth circle theorem: What can you say about the lengths of the two tangents CD and CE? You can use the cursor to move point C, and you can change the size of the circle by moving point A or B. This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com If you need them, the seven circle theorems here Tim Devereux, Created with GeoGebra