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Doubling a Distance with a Compass


	The classical Greek rules for geometric construction do not allow using a compass to mark off distances: it must "collapse" whenever one of its arms is lifted off the page. However it is still possible to double the distance between two points. The method can be repeated to draw evenly spaced points along an invisible line.


	Contributed by: Michael Schreiber

Compass (Wolfram MathWorld)

Mascheroni Construction (Wolfram MathWorld)

"Doubling a Distance with a Compass" from The Wolfram Demonstrations Project
http://demonstrations.wolfram.com/DoublingADistanceWithACompass/

Contributed by: Michael Schreiber

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