已知如图在三角形abc中,角bac等于90度,ab=ac,ad⊥bc于d,e为ac上一点,be交ad于h,af⊥be于g求证:dh=dfhttp://d.hiphotos.baidu.com/zhidao/wh%3D600%2C800/sign=42e8b736d11373f0f56a6799943f67c3/6d81800a19d8bc3e229e2987828ba61ea9d345ec.j
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![已知如图在三角形abc中,角bac等于90度,ab=ac,ad⊥bc于d,e为ac上一点,be交ad于h,af⊥be于g求证:dh=dfhttp://d.hiphotos.baidu.com/zhidao/wh%3D600%2C800/sign=42e8b736d11373f0f56a6799943f67c3/6d81800a19d8bc3e229e2987828ba61ea9d345ec.j](/uploads/image/z/1004124-12-4.jpg?t=%E5%B7%B2%E7%9F%A5%E5%A6%82%E5%9B%BE%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2abc%E4%B8%AD%2C%E8%A7%92bac%E7%AD%89%E4%BA%8E90%E5%BA%A6%2Cab%3Dac%2Cad%E2%8A%A5bc%E4%BA%8Ed%2Ce%E4%B8%BAac%E4%B8%8A%E4%B8%80%E7%82%B9%2Cbe%E4%BA%A4ad%E4%BA%8Eh%2Caf%E2%8A%A5be%E4%BA%8Eg%E6%B1%82%E8%AF%81%EF%BC%9Adh%3Ddfhttp%3A%2F%2Fd.hiphotos.baidu.com%2Fzhidao%2Fwh%253D600%252C800%2Fsign%3D42e8b736d11373f0f56a6799943f67c3%2F6d81800a19d8bc3e229e2987828ba61ea9d345ec.j)
已知如图在三角形abc中,角bac等于90度,ab=ac,ad⊥bc于d,e为ac上一点,be交ad于h,af⊥be于g求证:dh=dfhttp://d.hiphotos.baidu.com/zhidao/wh%3D600%2C800/sign=42e8b736d11373f0f56a6799943f67c3/6d81800a19d8bc3e229e2987828ba61ea9d345ec.j
已知如图在三角形abc中,角bac等于90度,ab=ac,ad⊥bc于d,e为ac上一点,be交ad于h,af⊥be于g
求证:dh=df
http://d.hiphotos.baidu.com/zhidao/wh%3D600%2C800/sign=42e8b736d11373f0f56a6799943f67c3/6d81800a19d8bc3e229e2987828ba61ea9d345ec.jpg
已知如图在三角形abc中,角bac等于90度,ab=ac,ad⊥bc于d,e为ac上一点,be交ad于h,af⊥be于g求证:dh=dfhttp://d.hiphotos.baidu.com/zhidao/wh%3D600%2C800/sign=42e8b736d11373f0f56a6799943f67c3/6d81800a19d8bc3e229e2987828ba61ea9d345ec.j
∵ 角bac等于90度,ab=ac,ad⊥bc
∴ AD三线合一 AD=BD
∵ ad⊥bc af⊥be
∠DAF+∠AFD =90 ∠HBD+∠AFD=90
∴ ∠DAF=∠HBD
∵ ∠ADF=∠BDH=90
∴ △ADF ≌△BDH
∴ DH=DF