调用line（）函数与plot（）函数，运用for循环命令。

线宽5，线条颜色为黑色，填充颜色与线条颜色不同。

坐标轴取等长刻度，标题：正五角星，x轴、y轴加上标注。-Calling line () function with the plot () function, use a for loop command. 5 width, line color is black, filled with color and line color is different. Take the long axis scale, etc., Title: Positive pentagram, x-axis, y-axis plus mark.