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DIY Pericentric Lens from a Fresnel and an entocentric lens
Author:
optowiki.info (Michael Schaefer)
GeoGebra
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z`]]
Select an object for a time to start a command. Light
montecarlo circles 1
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CAPS Collection
Circle Relations
six star tower
Def_19-2_Book_I_Elements_Euclids
Animation 171
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Square
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