[求助]关于动态观察与建模时遇到的问题
<p>1.任意新建一个图形文件，画一个半径为2的圆，然后用动态观察观看，没什么问题；2.输入下列点 <table cellspacing="0" cellpadding="0" width="231" border="0" style="WIDTH: 173pt; BORDER-COLLAPSE: collapse;"><colgroup><font size="2"><col width="231" style="WIDTH: 173pt; mso-width-source: userset; mso-width-alt: 7392;"></col></font></colgroup><tbody><tr height="19" style="HEIGHT: 14.25pt;"><td width="231" height="19" style="BORDER-RIGHT: #d7d7d7; BORDER-TOP: #d7d7d7; BORDER-LEFT: #d7d7d7; WIDTH: 173pt; BORDER-BOTTOM: #d7d7d7; HEIGHT: 14.25pt; BACKGROUND-COLOR: transparent;"><font size="2">338891.944,2802941.281,2.235</font></td></tr><tr height="19" style="HEIGHT: 14.25pt;"><td height="19" style="BORDER-RIGHT: #d7d7d7; BORDER-TOP: #d7d7d7; BORDER-LEFT: #d7d7d7; BORDER-BOTTOM: #d7d7d7; HEIGHT: 14.25pt; BACKGROUND-COLOR: transparent;"><font size="2">338893.356,2802943.757,2.235</font></td></tr><tr height="19" style="HEIGHT: 14.25pt;"><td height="19" style="BORDER-RIGHT: #d7d7d7; BORDER-TOP: #d7d7d7; BORDER-LEFT: #d7d7d7; BORDER-BOTTOM: #d7d7d7; HEIGHT: 14.25pt; BACKGROUND-COLOR: transparent;"><font size="2">338894.42,2802939.869,2.235</font></td></tr><tr height="19" style="HEIGHT: 14.25pt;"><td height="19" style="BORDER-RIGHT: #d7d7d7; BORDER-TOP: #d7d7d7; BORDER-LEFT: #d7d7d7; BORDER-BOTTOM: #d7d7d7; HEIGHT: 14.25pt; BACKGROUND-COLOR: transparent;"><font size="2">338895.832,2802942.345,2.235</font></td></tr><tr height="19" style="HEIGHT: 14.25pt;"><td height="19" style="BORDER-RIGHT: #d7d7d7; BORDER-TOP: #d7d7d7; BORDER-LEFT: #d7d7d7; BORDER-BOTTOM: #d7d7d7; HEIGHT: 14.25pt; BACKGROUND-COLOR: transparent;"><font size="2">338896.896,2802938.457,2.235</font></td></tr><tr height="19" style="HEIGHT: 14.25pt;"><td height="19" style="BORDER-RIGHT: #d7d7d7; BORDER-TOP: #d7d7d7; BORDER-LEFT: #d7d7d7; BORDER-BOTTOM: #d7d7d7; HEIGHT: 14.25pt; BACKGROUND-COLOR: transparent;"><font size="2">338898.307,2802940.933,2.235</font></td></tr><tr height="19" style="HEIGHT: 14.25pt;"><td height="19" style="BORDER-RIGHT: #d7d7d7; BORDER-TOP: #d7d7d7; BORDER-LEFT: #d7d7d7; BORDER-BOTTOM: #d7d7d7; HEIGHT: 14.25pt; BACKGROUND-COLOR: transparent;"><font size="2">338894.768,2802946.232,2.235</font></td></tr><tr height="19" style="HEIGHT: 14.25pt;"><td height="19" style="BORDER-RIGHT: #d7d7d7; BORDER-TOP: #d7d7d7; BORDER-LEFT: #d7d7d7; BORDER-BOTTOM: #d7d7d7; HEIGHT: 14.25pt; BACKGROUND-COLOR: transparent;"><font size="2">338897.244,2802944.82,2.235</font></td></tr><tr height="19" style="HEIGHT: 14.25pt;"><td height="19" style="BORDER-RIGHT: #d7d7d7; BORDER-TOP: #d7d7d7; BORDER-LEFT: #d7d7d7; BORDER-BOTTOM: #d7d7d7; HEIGHT: 14.25pt; BACKGROUND-COLOR: transparent;"><font size="2">338899.719,2802943.408,2.235</font></td></tr></tbody></table>3.在点附近画圆，然后动态观察，发现圆变型了，只要是带有弧线的实体统统变形。是什么原因哪，第一个画的不会变形？</p>
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