呢条公式叫毕氏定理 勾股定理 而英文正确系Pythagorean theorem或Pythagoras's theorem 参考: wiki
In this paper, we first give the Pythagorean theorem on the plane with generalized absolute value metric and show that the converse of the Pythagorean theorem is not true in this plane. Secondly, we give necessary and sufficient conditions for a triangle in this plane to have a right angle....