■等面単体の体積(その370)

 n=10の展開図については確認せずに・・・

  P1P2=P2P3=P3P4=P4P5=P5P6=P6P7=P7P8=P8P9=P9P10=√10

  P1P3=P2P4=P3P5=P4P6=P5P7=P6P8=P7P9=P8P10=√18

  P1P4=P2P5=P3P6=P4P7=P5P8=P6P9=P7P10=√24

  P1P5=P2P6=P3P7=P4P8=P5P9=P6P10=√28

  P1P6=P2P7=P3P8=P4P9=P5P10=√30

  P1P7=P2P8=P3P9=P4P10=√30

  P1P8=P2P9=P3P10=√28

  P1P9=P2P10=√24

  P1P10=√18

     =P2P3=P3P4=P4P5=P5P6=P6P7=P7P8=P8P9=   =√10

  P1P3=   =P3P5=P4P6=P5P7=P6P8=   =P8P10=√18

  P1P4=P2P5=   =P4P7=   =P6P9=P7P10=√24

  P1P5=P2P6=   =   =P5P9=P6P10=√28

     =P2P7=P3P8=P4P9=   =√30

  P1P7=P2P8=P3P9=P4P10=√30

  P1P8=P2P9=P3P10=√28

  P1P9=P2P10=√24

  P1P10=√18 → 35(OK)

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