说明：  绘制三角形图形程序 要求：掌握PC机显示模式的分类及特点 掌握利用汇编语言在图形方式下的编程方法 内容：编写程序.使PC机在中分辨率（模式4）显示一个三角形（各种三角形）。对于图形设计，要通过BIOS INT 10H调用，用菜单选择三角形的输出
(Draw triangle graphics program requirements: PC, display mode control the classification and characteristics to master the use of assembly language programming under the graphical method of content: programming. So that PC, in the resolution (model 4) shows a triangle (all triangles) . For graphic design, to be called by BIOS INT 10H, the output of the triangle with a menu selection)