与圆有关的比例线段复习课ADBCPFE相交弦定理：PA·PB=PC·PDGH=PE·PF=PG·PH=····················●MNST=PM·PN=PT2=（R+d）·（R－d）=R2－d2┓dR一、知识回顾ABCPO切割线定理：PA2=PB·PCDEMN=PD·PE=PM·PNST●=PS·PTQ=PQ2dR=(d＋R)·(d－R)=d2－R21...

时间:2024-11-17 13:57栏目:幼儿/小学教育