admin百科知識 2022-02-13 10:51:10 如圖,已知點D,E在△ABC的邊BC上,AB=AC,AD=AE.求証:BD=CE如圖,已知點D,E在△ABC的邊BC上,AB=AC,AD=AE.求証:BD=CE網友廻答：匿名網友因爲AB=AC,AD=AE所以△ABC △ADE爲等腰三角形所以∠B=∠C∠ADE=∠AED因爲∠AED=∠C ∠DEC ∠ADE=∠B ∠DAB所以∠DEC=∠DAB所以△ABD≌△ACE所以BD=CE db標簽 生活常識_百科知識_各類知識大全»如圖,已知點D,E在△ABC的邊BC上,AB=AC,AD=AE.求証:BD=CE
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