题目

如图,点在上,交于点,,.求证: 答案:证明:∵ , ∴ ∠A=∠ACF, ∠ADE=∠CFE.              -------2分在△ADE和△CFE中,∠A=∠ACF,∠ADE=∠CFE,,∴ △ADE≌△CFE.         --------4分∴ .             ------5分解析:略The door open,no matter how hard she pushed.A. shouldn’t B. couldn’tC. wouldn’t D. mightn’t
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