You'll need to learn to draw a straight line before you can paint the Mona Lisa.
在你可以画蒙娜丽沙以前，最起码你应该学会画直线吧。
Requirements can draw a straight line, arc, elliptical arc, polygon, to custom colors.
实现一个画图程序。要求能够画直线，圆弧，椭圆弧，多边形，能够自定义颜色。
If you can't draw a straight line, then use a ruler! Otherwise, try to stretch your visual creativity with some of the projects below.
如果你不会画直线，那就用把尺，或者，试着做做下面的事情拓展你的视觉创造力。
Draw a straight line realize, round, rectangular and arbitrary graffiti function, brushes, rubber size variable, support for color palettes.
实现绘制直线、圆、矩形及任意涂鸦功能，画笔、橡皮大小可变，支持调色板。
And I have a point outside the line. How many straight lines can I draw through the point but never meet the original line?
我可以画多少条通过点的直线，但它们永远不会与原来的线相交？
And I have a point outside the line. How many straight lines can I draw through the point but never meet the original line?
我可以画多少条通过点的直线，但它们永远不会与原来的线相交？
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