■基本単体の二面角(その164)
(その148)のE6~について
P0(0,0,0,0,0,0)
P1(1,0,0,0,0,0)
P2(1,1/√3,0,0,0,0)
P3(1,1/√3,1/√3,0,0,0)
P4(1,1/√3,1/√3,1,0,0)
P5(1,1/√3,0,0,1/√3,0)
P6(1,1/√3,0,0,1/√3,1)
は222
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E7~について
(0,0,0,0,0,0,0)
(1,0,0,0,0,0,0)
(1,1/√3,0,0,0,0,0)
(1,1/√3,1/√6,0,0,0,0)
(1,1/√3,1/√6,1/√6,0,0,0)
(1,1/√3,1/√6,1/√6,1/√3,0,0)
(1,1/√3,1/√6,1/√6,1/√3,1,0)
(1,1/√3,1/√6,0,0,0,1/2)
は331
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E8~について
(0,0,0,0,0,0,0,0)
(1,0,0,0,0,0,0,0)
(1,1/√3,0,0,0,0,0,0)
(1,1/√3,1/√6,0,0,0,0,0)
(1,1/√3,1/√6,1/√10,0,0,0,0)
(1,1/√3,1/√6,1/√10,1/√15,0,0,0)
(1,1/√3,1/√6,1/√10,1/√15,1/√12,0,0)
(1,1/√3,1/√6,1/√10,1/√15,1/√12,1/2,0)
(1,1/√3,1/√6,1/√10,1/√15,0,0,1/3)
は521
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[まとめ]これらは,基本単体のどの面同士で接合しているのかを示しているはずである.
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