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      <title>Планиметрия АК-1 by sergey2011201</title>
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      <description>Простые задачи 7-9</description>
      <language>en-us</language>
      <pubDate>2020-07-02 07:43:05 UTC</pubDate>
      <lastBuildDate>2023-06-03 02:51:51 UTC</lastBuildDate>
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         <author>sergey2011201</author>
         <link>https://padlet.com/sergey2011201/929tuhtl2qs8nevv/wish/645758510</link>
         <description><![CDATA[<div>Простые задачи по планиметрии</div>]]></description>
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         <pubDate>2020-07-02 07:43:54 UTC</pubDate>
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         <author>sergey2011201</author>
         <link>https://padlet.com/sergey2011201/929tuhtl2qs8nevv/wish/645759249</link>
         <description><![CDATA[<div>Отрезок, соединяющий середины диагоналей трапеции, равен по-<br>луразности оснований.</div>]]></description>
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         <pubDate>2020-07-02 07:44:50 UTC</pubDate>
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         <pubDate>2020-07-02 07:46:57 UTC</pubDate>
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         <author>sergey2011201</author>
         <link>https://padlet.com/sergey2011201/929tuhtl2qs8nevv/wish/645763348</link>
         <description><![CDATA[<div>Проекция диагонали равнобедренной трапеции на основание равна полусумме оснований.</div>]]></description>
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         <pubDate>2020-07-02 07:49:53 UTC</pubDate>
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         <author>sergey2011201</author>
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         <pubDate>2020-07-02 07:55:14 UTC</pubDate>
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         <title></title>
         <author>sergey2011201</author>
         <link>https://padlet.com/sergey2011201/929tuhtl2qs8nevv/wish/645776540</link>
         <description><![CDATA[<div>Радиус окружности, вписанной в прямоугольный треугольник<br>с катетами a, b и гипотенузой c, <br>равен (a+b −c)/2.</div>]]></description>
         <pubDate>2020-07-02 08:07:07 UTC</pubDate>
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         <title></title>
         <author>sergey2011201</author>
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         <pubDate>2020-07-02 08:14:42 UTC</pubDate>
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         <title></title>
         <author>sergey2011201</author>
         <link>https://padlet.com/sergey2011201/929tuhtl2qs8nevv/wish/645784824</link>
         <description><![CDATA[<div><strong>Средние пропорциональные в прямоугольном треугольнике.</strong><br> Высота прямоугольного треугольника, <br>проведенная из вершины прямого угла, <br>есть среднее пропорциональное <br>проекций катетов на гипотенузу, <br>а каждый катет есть <br>среднее пропорциональное <br>гипотенузы и своей проекции на гипотенузу.</div>]]></description>
         <pubDate>2020-07-02 08:18:49 UTC</pubDate>
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         <title></title>
         <author>sergey2011201</author>
         <link>https://padlet.com/sergey2011201/929tuhtl2qs8nevv/wish/645792653</link>
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         <pubDate>2020-07-02 08:29:17 UTC</pubDate>
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      <item>
         <title></title>
         <author>sergey2011201</author>
         <link>https://padlet.com/sergey2011201/929tuhtl2qs8nevv/wish/645793137</link>
         <description><![CDATA[]]></description>
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         <pubDate>2020-07-02 08:29:59 UTC</pubDate>
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         <title></title>
         <author>sergey2011201</author>
         <link>https://padlet.com/sergey2011201/929tuhtl2qs8nevv/wish/645794844</link>
         <description><![CDATA[<div>Если в трапецию можно вписать окружность, <br>то радиус окружности есть среднее пропорциональное отрезков,<br> на которые точка касания делит боковую сторону.</div>]]></description>
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         <pubDate>2020-07-02 08:32:47 UTC</pubDate>
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         <author>sergey2011201</author>
         <link>https://padlet.com/sergey2011201/929tuhtl2qs8nevv/wish/645808728</link>
         <description><![CDATA[<h1>Докажите, что если в трапецию можно вписать окружность,<br> то боковая сторона трапеции видна<br> из центра окружности под прямым углом</h1><div><br></div>]]></description>
         <pubDate>2020-07-02 08:52:07 UTC</pubDate>
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         <title></title>
         <author>sergey2011201</author>
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         <pubDate>2020-07-02 08:56:18 UTC</pubDate>
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         <author>sergey2011201</author>
         <link>https://padlet.com/sergey2011201/929tuhtl2qs8nevv/wish/645819921</link>
         <description><![CDATA[<div>Сумма квадратов диагоналей<br>параллелограмма равна <br>сумме квадратов всех его сторон</div>]]></description>
         <pubDate>2020-07-02 09:08:12 UTC</pubDate>
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         <author>sergey2011201</author>
         <link>https://padlet.com/sergey2011201/929tuhtl2qs8nevv/wish/645833010</link>
         <description><![CDATA[<div>Теорема косинусов<br> <em>AD = b cos α,</em></div><div><em>DB = c – b cos α</em></div>]]></description>
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         <pubDate>2020-07-02 09:28:43 UTC</pubDate>
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         <author>sergey2011201</author>
         <link>https://padlet.com/sergey2011201/929tuhtl2qs8nevv/wish/645840464</link>
         <description><![CDATA[<div><em>h</em><em><sup>2 </sup></em><em>= b</em><em><sup>2</sup></em><em> - (b cos α)</em><em><sup>2</sup></em><em> </em></div><div><em>h</em><em><sup>2</sup></em><em> = a</em><em><sup>2</sup></em><em> - (c – b cos α)</em><em><sup>2</sup></em><em> </em></div>]]></description>
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         <pubDate>2020-07-02 09:42:41 UTC</pubDate>
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         <author>sergey2011201</author>
         <link>https://padlet.com/sergey2011201/929tuhtl2qs8nevv/wish/645844561</link>
         <description><![CDATA[<div>Теорема косинусов</div>]]></description>
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         <pubDate>2020-07-02 09:50:04 UTC</pubDate>
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         <author>sergey2011201</author>
         <link>https://padlet.com/sergey2011201/929tuhtl2qs8nevv/wish/645844669</link>
         <description><![CDATA[<div> Рассмотрим задачу, в которой требуется <br>по сторонам треугольника найти его медиану. </div>]]></description>
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         <pubDate>2020-07-02 09:50:17 UTC</pubDate>
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         <author>sergey2011201</author>
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         <pubDate>2020-07-02 09:58:15 UTC</pubDate>
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         <author>sergey2011201</author>
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         <pubDate>2020-07-02 10:03:32 UTC</pubDate>
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         <author>sergey2011201</author>
         <link>https://padlet.com/sergey2011201/929tuhtl2qs8nevv/wish/645853709</link>
         <description><![CDATA[<div><strong>Обобщенная теорема синусов.</strong><br> Отношение стороны треугольника<br>к синусу противолежащего угла равно<br> диаметру окружности, описанной около треугольника.</div>]]></description>
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         <pubDate>2020-07-02 10:06:37 UTC</pubDate>
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         <title></title>
         <author>sergey2011201</author>
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         <description><![CDATA[]]></description>
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         <pubDate>2020-07-02 10:09:32 UTC</pubDate>
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         <title></title>
         <author>sergey2011201</author>
         <link>https://padlet.com/sergey2011201/929tuhtl2qs8nevv/wish/645857128</link>
         <description><![CDATA[<div>Постройте треугольник по двум сторонам<br>и медиане, проведенной к третьей стороне.</div>]]></description>
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         <pubDate>2020-07-02 10:12:14 UTC</pubDate>
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