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    <title>CAD设计论坛 - AutoCAD二维设计（含画法几何）</title>
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    <description>Latest 20 threads of AutoCAD二维设计（含画法几何）</description>
    <copyright>Copyright(C) CAD设计论坛</copyright>
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      <title>作三角形的内接三角形，使其三边各过一定点</title>
      <link>https://www.askcad.com/bbs/thread-232536-1-1.html</link>
      <description><![CDATA[作△ABC的内接△DEF，使其三边各过一定点：

外加一题：作△ABC的内接△DEF，使其两边EF、DE各过一定点P、Q，D在BC上且∠EDF为直角。]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>yimin0519</author>
      <pubDate>Fri, 10 Jul 2026 03:10:41 +0000</pubDate>
    </item>
    <item>
      <title>求作△ABC内接△DEF，使得定圆⊙O为其内切圆。</title>
      <link>https://www.askcad.com/bbs/thread-232535-1-1.html</link>
      <description><![CDATA[求作△ABC内接△DEF，使得定圆⊙O为其内切圆。（定圆⊙O在△ABC内）]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>yimin0519</author>
      <pubDate>Mon, 06 Jul 2026 09:03:41 +0000</pubDate>
    </item>
    <item>
      <title>作已知△ABC内接正△DEF（某边过△ABC外一点）</title>
      <link>https://www.askcad.com/bbs/thread-232534-1-1.html</link>
      <description><![CDATA[不知论坛是否发过类似帖子，权当练习：
已知△ABC及其外一点P，求作一内接正△DEF，使得射线FD过P点。]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>yimin0519</author>
      <pubDate>Fri, 03 Jul 2026 08:49:32 +0000</pubDate>
    </item>
    <item>
      <title>2026-16图</title>
      <link>https://www.askcad.com/bbs/thread-232533-1-1.html</link>
      <description><![CDATA[2026-16图]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>guzhenfei</author>
      <pubDate>Tue, 30 Jun 2026 07:54:23 +0000</pubDate>
    </item>
    <item>
      <title>2026-15图</title>
      <link>https://www.askcad.com/bbs/thread-232532-1-1.html</link>
      <description><![CDATA[2026-15图]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>guzhenfei</author>
      <pubDate>Wed, 24 Jun 2026 08:06:31 +0000</pubDate>
    </item>
    <item>
      <title>2026-15图</title>
      <link>https://www.askcad.com/bbs/thread-232531-1-1.html</link>
      <description><![CDATA[2026-15图]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>guzhenfei</author>
      <pubDate>Wed, 24 Jun 2026 08:05:40 +0000</pubDate>
    </item>
    <item>
      <title>2026-14图</title>
      <link>https://www.askcad.com/bbs/thread-232530-1-1.html</link>
      <description><![CDATA[2026-14图]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>guzhenfei</author>
      <pubDate>Thu, 18 Jun 2026 12:32:20 +0000</pubDate>
    </item>
    <item>
      <title>2026-13图</title>
      <link>https://www.askcad.com/bbs/thread-232529-1-1.html</link>
      <description><![CDATA[2026-13图]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>guzhenfei</author>
      <pubDate>Mon, 15 Jun 2026 00:11:37 +0000</pubDate>
    </item>
    <item>
      <title>2026-12图</title>
      <link>https://www.askcad.com/bbs/thread-232528-1-1.html</link>
      <description><![CDATA[2026-12图]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>guzhenfei</author>
      <pubDate>Wed, 10 Jun 2026 11:54:59 +0000</pubDate>
    </item>
    <item>
      <title>2026-11图</title>
      <link>https://www.askcad.com/bbs/thread-232527-1-1.html</link>
      <description><![CDATA[2026-11图]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>guzhenfei</author>
      <pubDate>Tue, 09 Jun 2026 01:44:11 +0000</pubDate>
    </item>
    <item>
      <title>2026-10图</title>
      <link>https://www.askcad.com/bbs/thread-232524-1-1.html</link>
      <description><![CDATA[2026-10图]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>guzhenfei</author>
      <pubDate>Wed, 03 Jun 2026 08:50:00 +0000</pubDate>
    </item>
    <item>
      <title>2026-10图</title>
      <link>https://www.askcad.com/bbs/thread-232523-1-1.html</link>
      <description><![CDATA[2026-10图]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>guzhenfei</author>
      <pubDate>Wed, 03 Jun 2026 08:37:58 +0000</pubDate>
    </item>
    <item>
      <title>2026-10图</title>
      <link>https://www.askcad.com/bbs/thread-232522-1-1.html</link>
      <description><![CDATA[2026-10图]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>guzhenfei</author>
      <pubDate>Wed, 03 Jun 2026 08:36:57 +0000</pubDate>
    </item>
    <item>
      <title>2026-9图</title>
      <link>https://www.askcad.com/bbs/thread-232520-1-1.html</link>
      <description><![CDATA[2026-9图]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>guzhenfei</author>
      <pubDate>Mon, 01 Jun 2026 08:16:18 +0000</pubDate>
    </item>
    <item>
      <title>2026-8图</title>
      <link>https://www.askcad.com/bbs/thread-232519-1-1.html</link>
      <description><![CDATA[2026-8图]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>guzhenfei</author>
      <pubDate>Wed, 27 May 2026 00:45:47 +0000</pubDate>
    </item>
    <item>
      <title>2027-7图</title>
      <link>https://www.askcad.com/bbs/thread-232518-1-1.html</link>
      <description><![CDATA[2027-7图]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>guzhenfei</author>
      <pubDate>Tue, 26 May 2026 01:19:15 +0000</pubDate>
    </item>
    <item>
      <title>2026-6图</title>
      <link>https://www.askcad.com/bbs/thread-232517-1-1.html</link>
      <description><![CDATA[2026-6图]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>guzhenfei</author>
      <pubDate>Sun, 24 May 2026 01:52:26 +0000</pubDate>
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    <item>
      <title>2026-5图</title>
      <link>https://www.askcad.com/bbs/thread-232516-1-1.html</link>
      <description><![CDATA[2026-5图]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>guzhenfei</author>
      <pubDate>Tue, 19 May 2026 00:10:57 +0000</pubDate>
    </item>
    <item>
      <title>2026-4图</title>
      <link>https://www.askcad.com/bbs/thread-232515-1-1.html</link>
      <description><![CDATA[2026-4图]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>guzhenfei</author>
      <pubDate>Fri, 15 May 2026 03:30:04 +0000</pubDate>
    </item>
    <item>
      <title>2026-4图</title>
      <link>https://www.askcad.com/bbs/thread-232514-1-1.html</link>
      <description><![CDATA[2026-4图]]></description>
      <category>AutoCAD二维设计（含画法几何）</category>
      <author>guzhenfei</author>
      <pubDate>Fri, 15 May 2026 03:26:29 +0000</pubDate>
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