Enter the coordinates of the three points A, B, C coordinates, requirements: to determine whether these three points can form a triangle, if not constitute a triangle, then the output No , otherwise, the output Yes . If you can form a triangle for the area of ABC] (3) if triangle ABC is a right angled triangle, the output of right if the triangle is acute, output acute if it is an obtuse triangle, is output Obtuse.

04.cpp
04.dsp
04.dsw
04.ncb
04.opt
04.plg

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