如图,点D在△ABC的边上且与点B、C不重合,过点D作DE‖AC交AB于E,作DF‖AB交AC于F,
、如图，点D在△ABC的边上且与点B、C不重合，过点D作DE‖AC交AB于E，作DF‖AB交AC于F，已知BC=5，S△ABC=S.（1）求证：四边形AEDF是平行四边形...
、如图，点D在△ABC的边上且与点B、C不重合，过点D作DE‖AC交AB于E，作DF‖AB交AC于F，已知BC=5，S△ABC=S.
（1）求证：四边形AEDF是平行四边形；
（2）设BD=x, 写出y=S□AEDF关于x的函数解析式，并求出□AEDF的最大面积；
（3）若S□AEDF= S，求出BD的长. 展开
（1）求证：四边形AEDF是平行四边形；
（2）设BD=x, 写出y=S□AEDF关于x的函数解析式，并求出□AEDF的最大面积；
（3）若S□AEDF= S，求出BD的长. 展开
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The Nike Air Flightposite II LE is set to release this Saturday at Foot Locker and its House of Hoops locations making it a fairly easy shoe to get a hold of.
This is the 10th anniversary of the shoe that Kevin Garnett made famous and while the past has seen several color ways released it will be dropping in a triple black color way. Anybody else juiced about this one? Who’s copping? Via Footlockerunlocked
Also you will like it：
ralph lauren polo shirts New Balance 410 ? Spring
air force 1 Nike Air Force 1 GS ? White Black
womens gucci mocassin loafers KicksOnFire’s 10 Mo
This is the 10th anniversary of the shoe that Kevin Garnett made famous and while the past has seen several color ways released it will be dropping in a triple black color way. Anybody else juiced about this one? Who’s copping? Via Footlockerunlocked
Also you will like it：
ralph lauren polo shirts New Balance 410 ? Spring
air force 1 Nike Air Force 1 GS ? White Black
womens gucci mocassin loafers KicksOnFire’s 10 Mo
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