已知在△ABC中,∠BAC=120°,∠BAC、∠ABC、∠BCA的的角平分线分别与对边交于点D、E、F···初中几何题:已知在△ABC中,∠BAC=120°,∠BAC、∠ABC、∠BCA的的角平分线分别与对边交于点D、E、F.证明:
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 20:26:38
![已知在△ABC中,∠BAC=120°,∠BAC、∠ABC、∠BCA的的角平分线分别与对边交于点D、E、F···初中几何题:已知在△ABC中,∠BAC=120°,∠BAC、∠ABC、∠BCA的的角平分线分别与对边交于点D、E、F.证明:](/uploads/image/z/14675528-56-8.jpg?t=%E5%B7%B2%E7%9F%A5%E5%9C%A8%E2%96%B3ABC%E4%B8%AD%2C%E2%88%A0BAC%3D120%C2%B0%2C%E2%88%A0BAC%E3%80%81%E2%88%A0ABC%E3%80%81%E2%88%A0BCA%E7%9A%84%E7%9A%84%E8%A7%92%E5%B9%B3%E5%88%86%E7%BA%BF%E5%88%86%E5%88%AB%E4%B8%8E%E5%AF%B9%E8%BE%B9%E4%BA%A4%E4%BA%8E%E7%82%B9D%E3%80%81E%E3%80%81F%C2%B7%C2%B7%C2%B7%E5%88%9D%E4%B8%AD%E5%87%A0%E4%BD%95%E9%A2%98%EF%BC%9A%E5%B7%B2%E7%9F%A5%E5%9C%A8%E2%96%B3ABC%E4%B8%AD%2C%E2%88%A0BAC%3D120%C2%B0%2C%E2%88%A0BAC%E3%80%81%E2%88%A0ABC%E3%80%81%E2%88%A0BCA%E7%9A%84%E7%9A%84%E8%A7%92%E5%B9%B3%E5%88%86%E7%BA%BF%E5%88%86%E5%88%AB%E4%B8%8E%E5%AF%B9%E8%BE%B9%E4%BA%A4%E4%BA%8E%E7%82%B9D%E3%80%81E%E3%80%81F.%E8%AF%81%E6%98%8E%EF%BC%9A)
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