<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>arc</title>
</head>
<body>
<canvas id="canvas" style="border: 1px solid #ddd;"></canvas>
<script>
<!DOCTYPE html>
<html lang="en">
<head>
阅读背景：
canvas基础绘制-arc
来源：互联网
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