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一、作三角形的外接圆关于三角形平面几何问题,若感到难以下手,作三角形的外接圆,问题能迎刃而解.例1证明三角形两边的乘积等于其夹角平分线分对边
First, as a triangle circumcircle If you feel difficult to start, as a circumcircle of the triangle, the problem can be solved. Example 1 Prove that the product of the two sides of the triangle is equal to the bisector of the bisector of the angle