如图,△ABC的三条角平分线交于点O,过点O作OE⊥BC于点E,求证:∠BOD=∠COE.
<p>问题:如图,△ABC的三条角平分线交于点O,过点O作OE⊥BC于点E,求证:∠BOD=∠COE.<p>答案:↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">刘海玲的回答:<div class="content-b">网友采纳 证明:∵∠AFO=∠FBC+∠ACB=12∠ABC+∠ACB,∴∠AOF=180°-(∠DAC+∠AF0)=180°-=180°-=180°-=180°-=90°-12∠ACB,...
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