第 21 楼
以下是引用john2000在2011-2-1 11:21:00的发言：
a.AB:PD=1:2
soAB=AP=AD
ABCDis a parallelogram
AB=DC
PRis a mid-point of.....
AB=PR=DC
soABRP=PRCD
soBP||RD,AR||PC
哇死人john咁q勁= =
獎你個紅包(金額你自定)
a.AB:PD=1:2
soAB=AP=AD
ABCDis a parallelogram
AB=DC
PRis a mid-point of.....
AB=PR=DC
soABRP=PRCD
soBP||RD,AR||PC
哇死人john咁q勁= =
獎你個紅包(金額你自定)
哇死人john咁q勁= =
獎你個紅包(金額你自定)
10SB..
b.yes
ABRP,PRCD are parallelogram
soPB=DR,AR=PC
so PQ=SR,PS=QR
so.......ys
b.yes
ABRP,PRCD are parallelogram
soPB=DR,AR=PC
so PQ=SR,PS=QR
so.......ys
天日問中文..
on9比d中3,4既我
未學過
