Eulero e i poliedri
Eulero e i poliedri
Eulero e i poliedri
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22<br />
• poliedro con facce pentagonali e triangolari<br />
e con vertici di valenza 4<br />
F 5 + F 3 + (5F 5 + 3 F 3 ) / 4 - (5F 5 + 3 F 3 ) / 2 = 2<br />
F 5 (1+ 5/4 – 5/2) + F 3 (1 + 3/4 – 3/2) = 2<br />
F 3 /4 - F 5 / 4 = 2<br />
F 3 - F 5 = 8<br />
icosidodecaedro<br />
F 3 = 20<br />
F 5 = 12
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