利用FLASM编写的可动态演示三角形的四心（内心，外心，重心，垂心）以及四线（角平分线，中线，高，中垂线）- Written using FLASM dynamically demonstrate the triangular Tudor (inner, external, center of gravity, orthocenter) and four wire (Angle bisector, middle, high, midperpendicular)

烈火学院的解三角形程序，十分好用，适用于各种三角问题。-Fire Academy triangle solution procedure is very useful for a variety of triangular problem.