已知如圖在△ABC中,AB=AC.點D,E在BC上且AD=AE.求證△ABD全等△ACE
題目:
已知如圖在△ABC中,AB=AC.點D,E在BC上且AD=AE.求證△ABD全等△ACE
解答:
證明:
∵AB=AC,
∴∠B=∠C
∵AD=AE,
∴∠ADE=∠AED,
又∵點D、E在BC邊上,
∴∠ADB=∠AEC,
在△ABD和△ACE中,
∠ADB=∠AEC
∠B=∠C
AB=AC
∴△ABD≌△ACE
題目:
已知如圖在△ABC中,AB=AC.點D,E在BC上且AD=AE.求證△ABD全等△ACE
解答:
證明:
∵AB=AC,
∴∠B=∠C
∵AD=AE,
∴∠ADE=∠AED,
又∵點D、E在BC邊上,
∴∠ADB=∠AEC,
在△ABD和△ACE中,
∠ADB=∠AEC
∠B=∠C
AB=AC
∴△ABD≌△ACE
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