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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Document</title>
</head>
<body>
<h3>曲线一</h3>
<svg>
<polyline points="0,40 40,40 40,80 80,80 80,120 120,120 120,160" style="fill:white;stroke:red;stroke-width:4" />
</svg>
<h3>曲线二</h3>
<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
<polyline points="20,20 40,25 60,40 80,120 120,140 200,180"
style="fill:blue;stroke:black;stroke-width:3" />
</svg>
<h3>路径一</h3>
<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
<path d='M0 50 L50 0 L100 50 Z'/>
</svg>
<h3>路径二</h3>
<svg xmlns="http://www.w3.org/2000/svg" version="1.1" height="400" 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" />
<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" />
</g>
<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>
</g>
</svg>
</body>
</html>