(1) 定义一支黄色画笔，绘制一条线段；

(1) 定义一支紫色画笔，绘制一条多段线；

(3) 定义一支红色画笔，绘制一个正方形，并用适当的画刷填充图形内部；

(4) 定义一支绿色画笔，绘制一个圆，并用适当的画刷填充图形内部；

(5) 定义一支蓝色画笔，绘制一个正六边形，并用适当的画刷填充图形内部。

-(1) defines a yellow pen, draw a line segment　(1) defines a purple pen, draw a polyline　(3) defines a red pen, draw a square, and filled with the appropriate brush graphics inside　( 4) defines a green pen to draw a circle and fill with the appropriate brush graphics inside　(5) defines a blue pen, draw a regular hexagon, and filled with the appropriate brush graphics inside.