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<meta charset="UTF-8">
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<div>M = 移至</div>
<div>L = 画线</div>
<div>H = 竖画线</div>
<div>V = 垂直画线</div>
<div>C = 曲线</div>
<div>S = 光滑的曲线</div>
<div>Q = 二次贝塞尔曲线</div>
<div>T = 光滑二次贝塞尔曲线</div>
<div>A = 椭圆的弧</div>
<div>Z = 关闭路径</div>
<b style="color: red;">注：以上所有命令均允许小写字母。大写表示绝对定位，小写表示相对定位。</b>
</div>
<svg xmlns="http://www.w3.org/2000/svg" version="1.1" height="600" width="450">
<path id="lineAB" d="M 100 350 l 150 -300" stroke="red" stroke-width="3" fill="none" />
<path id="lineBC" d="M 250 50 l 150 300" stroke="red" stroke-width="3" fill="none" />
<path d="M 175 200 l 150 0" stroke="green" stroke-width="3" fill="none" />
<path d="M 100 350 q 150 -300 300 0" stroke="blue" stroke-width="5" fill="none" />
<path d="M 100 350 q 150 300 300 0" stroke="pink" stroke-width="5" fill="none" />
<!-- Mark relevant points -->
<g stroke="black" stroke-width="3" fill="black">
<circle id="pointA" cx="100" cy="350" r="3" />
<circle id="pointB" cx="250" cy="50" r="3" />
<circle id="pointC" cx="400" cy="350" r="3" />
<circle id="pointD" cx="250" cy="500" r="3" />
</g>
<!-- Label the points -->
<g font-size="30" font="sans-serif" fill="black" stroke="none" text-anchor="middle">
<text x="100" y="350" dx="-30">A</text>
<text x="250" y="50" dy="-10">B</text>
<text x="400" y="350" dx="30">C</text>
<text x="250" y="500" dY="30">D</text>
</g>
</svg>
</body>
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原文：https://www.cnblogs.com/LindaBlog/p/10195154.html