说明：  解三角形，冰火天空软件，6种情况解三角形，包括各边，各角，面积，内切圆，外接圆，三高等三角形特征计算。并且可以输出计算过程。另外可以随机产生试卷和答案。
(Solutions of triangles, Addict sky software, 6 kinds of situations Solutions triangle, each side, each corner area, the inner cutting circle, the circumcircle, Higher triangle characterized calculated. And output calculation process. Also can be randomly generated papers and answers.)