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已知点A(1,-2,11),B(4,2,3),C(6,-1,4),则△ABC的形...
已知点A(1,-2,11),B(4,2,3),C(6,-1,4),则△ABC的形状是( )
A.等边三角形
B.直角三角形
C.等腰三角形
D.等腰直角三角形
考点分析:
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