1.三角形ABC的三边a.b.c满足a²+b²+c²=ab+ac+bc,则三角形ABC为__三角形(过程)2.在三角形ABC中,三边a.b.c满足a=m²-n²,b=2mn,c=m²+n²,其中m.n是正整数,且m>n,试判断三角形ABC的形
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![1.三角形ABC的三边a.b.c满足a²+b²+c²=ab+ac+bc,则三角形ABC为__三角形(过程)2.在三角形ABC中,三边a.b.c满足a=m²-n²,b=2mn,c=m²+n²,其中m.n是正整数,且m>n,试判断三角形ABC的形](/uploads/image/z/3040054-70-4.jpg?t=1.%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E7%9A%84%E4%B8%89%E8%BE%B9a.b.c%E6%BB%A1%E8%B6%B3a%26sup2%3B%2Bb%26sup2%3B%2Bc%26sup2%3B%3Dab%2Bac%2Bbc%2C%E5%88%99%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%BA%EF%BC%BF%EF%BC%BF%E4%B8%89%E8%A7%92%E5%BD%A2%EF%BC%88%E8%BF%87%E7%A8%8B%EF%BC%892.%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2C%E4%B8%89%E8%BE%B9a.b.c%E6%BB%A1%E8%B6%B3a%3Dm%26sup2%3B-n%26sup2%3B%2Cb%3D2mn%2Cc%3Dm%26sup2%3B%2Bn%26sup2%3B%2C%E5%85%B6%E4%B8%ADm.n%E6%98%AF%E6%AD%A3%E6%95%B4%E6%95%B0%2C%E4%B8%94m%EF%BC%9En%2C%E8%AF%95%E5%88%A4%E6%96%AD%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E7%9A%84%E5%BD%A2)
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