A Lemma of Archimedes about a Bisected Segment

Initializing live version

Let AB be the diameter of a semicircle. Let CB and CD be tangents. If DE is perpendicular to AB and DE intersects AC at F then DF = FE.

Contributed by: Jay Warendorff (March 2011)
After work by: Antonio Gutierrez
Open content licensed under CC BY-NC-SA

Snapshots


Feedback (field required)

Email (field required)	Name

Occupation	Organization

Note: Your message & contact information may be shared with the author of any specific Demonstration for which you give feedback. Send