■サマーヴィルの等面四面体(その787)

 投影先の座標が不一致の原因を探ってみたい.

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【3】△6について

P0(4/√12,    0  ,0,   0,7/√42,7/√14)

P1(   0,    0,  0,   0,   0,   0)

P2(3/√12,7/√28,7/√14,   0,   0,   0)

P3(6/√12,14/√28,   0,   0,   0,   0)

P4(9/√12,7/√28,   0,7/√14,   0,   0)

P5(12/√12,    0  ,0,   0,   0,   0)

P6(8/√12,    0  ,0,   0,14/√42,   0)

F6:

P0(4/√12,    0  ,0,   0,7/√42)

P1(   0,    0,  0,   0,   0)

P2(3/√12,7/√28,7/√14,   0,   0)

P3(6/√12,14/√28,   0,   0,   0)

P4(9/√12,7/√28,   0,7/√14,   0)

P5(12/√12,    0  ,0,   0,   0)→OK

G6:

P0(4/√12,    0  ,0,   0)

P1(   0,    0,  0,   0)

P2(3/√12,7/√28,7/√14,   0)

P3(6/√12,14/√28,   0,   0)

P4(9/√12,7/√28,   0,7/√14)→OK

H6

P0(4/√12,    0  ,0)

P1(   0,    0,  0)

P2(3/√12,7/√28,7/√14)

P3(6/√12,14/√28,   0)→OK

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