全等三角形對(duì)應(yīng)角的平分線是否相等?對(duì)應(yīng)中線和對(duì)應(yīng)高呢?全等三角形的面積是否相等?
全等三角形對(duì)應(yīng)角的平分線是否相等?對(duì)應(yīng)中線和對(duì)應(yīng)高呢?全等三角形的面積是否相等?
數(shù)學(xué)人氣:371 ℃時(shí)間:2020-02-06 06:36:18
優(yōu)質(zhì)解答
. 全等三角形對(duì)應(yīng)線段相等,這是定理,中考可以直接用.這里證明一個(gè)吧,對(duì)應(yīng)邊上的高線相等.設(shè)⊿ABC≌⊿A'B'C'.AD.A'D'是高.AB=A'B' ∠B=∠B' ∠ADB=∠A'D'D'=90 ∴⊿ADB≌⊿A'D'B'(AAS) ∴AD=A'D
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