Ax1+By1+Cz1+D=0(B∈∏) Pr npIp= Ao+的o+Cz0+D A2 +B2+C 2 ∴d14xn+By+Czo+D V42+B+O2 点到平面距离公式 上页0  Ax1 + By1 + Cz1 + D = ( ) P1    Pr j n P1P0 = , 2 2 2 0 0 0 A B C Ax By Cz D + + + + + . | | 2 2 2 0 0 0 A B C Ax By Cz D d + + + + +  = 点到平面距离公式