■サマーヴィルの等面四面体(その632)

【1】△4 in △3

a^2=3m^2+h^2(4)

b^2=4m^2+4h^2(3)

c^2=3m^2+9h^2(2)

d^2=16h^2(1)

【2】F5 in △3

【3】G6 in △3

【4】H7 in △3

でも

 3m^2+h^2(4)<3m^2+9h^2(2)

 4m^2+4h^2(3),16h^2(1)

は変わらない.

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