■等面単体の体積(その368)
n=9の展開図については確認せずに・・・
P1P2=P2P3=P3P4=P4P5=P5P6=P6P7=P7P8=P8P9=3
P1P3=P2P4=P3P5=P4P6=P5P7=P6P8=P7P9=4
P1P4=P2P5=P3P6=P4P7=P5P8=P6P9=√21
P1P5=P2P6=P3P7=P4P8=P5P9=√24
P1P6=P2P7=P3P8=P4P9=5
P1P7=P2P8=P3P9=√24
P1P8=P2P9=√21
P1P9=√4
=P2P3=P3P4=P4P5=P5P6=P6P7=P7P8= =3
P1P3= =P3P5=P4P6=P5P7= =P7P9=4
P1P4=P2P5= = =P5P8=P6P9=√21
P1P5= =P3P7= =P5P9=√24
= = = =5 → 真ん中の行はNG
P1P7=P2P8=P3P9=√24
P1P8=P2P9=√21
P1P9=4
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