rt谢谢

解决方案 »

  1.   


    <html xmlns:v="urn:schemas-microsoft-com:vml">
    <head runat="server">
        <title>Untitled Page</title>
        <style>
            v\:*
            {
                behavior: url(#default#VML);
            }
        </style>
    </head>
    <body>
        <form id="form1" runat="server">
        <div>
           <v:arc filled=false style="position:relative;width:100;height:100"
                  StartAngle="90" EndAngle="270" />
        </div>
        </form>
    </body>
    </html>
      

  2.   

    唉...几何公式都忘了公式都忘了坐标o(x,y),半径r,角度a..