Full text: Stereoskopische Bilder aus der Stereometrie 

r 
~ . . ■ - 
13. Hexagonale Pyramide aus dem Cubus. 
14. Das Tetraeder im Cubus aus dem Oktaeder 
entwickelt. 
15. Tetrakishexaeder oder Pyramidenwürfel. 
(Krystallform des Fluorits, Goldes.) 
16. Oktaeder, ein- und umschriebener Cubus.
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