如图,已知△ABC中,AB=AC,点D、E分别在AB、AC上,且BD=CE,如何说明OB=OC呢?解:∵AB=AC,∴∠ABC=∠A
如图,已知△ABC中,AB=AC,点D、E分别在AB、AC上,且BD=CE,如何说明OB=OC呢?解:∵AB=AC,∴∠ABC=∠ACB______又∵BD=CE____...
如图,已知△ABC中,AB=AC,点D、E分别在AB、AC上,且BD=CE,如何说明OB=OC呢?解:∵AB=AC,∴∠ABC=∠ACB______又∵BD=CE______ BC=CB______∴△BCD≌△CBE______∴∠______=∠______∴OB=OC______.
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