<PRE><B>Question 1203123</B>
.


For any convex quadrilateral, &amp;nbsp;its midpoints are vertices of a parallelogram.


For the proof &amp;nbsp;(which is very simple), &amp;nbsp;see the lesson

&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;- &lt;A HREF=https://www.algebra.com/algebra/homework/word/geometry/Midpoints-of-a-quadrilateral-are-vertices-of-the-parallelogram.lesson&gt;Midpoints of a quadrilateral are vertices of the parallelogram&lt;/A&gt; 

in this site.


It is a general property of &amp;nbsp;&lt;U&gt;any plane convex quadrilateral&lt;/U&gt;, &amp;nbsp;independently on disposition/location of its vertices.


---------------


On Geometry, &amp;nbsp;you have this free of charge online textbook 

&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;- &lt;A HREF=https://www.algebra.com/algebra/homework/Triangles/GEOMETRY-your-online-textbook.lesson&gt;GEOMETRY - YOUR ONLINE TEXTBOOK&lt;/A&gt;

in this site. 


The referred lesson is the part of this textbook under the topic &quot;&lt;U&gt;PROPERTIES OF PARALLELOGRAMS&lt;/U&gt;&quot;.


Save the link to this online textbook together with its description


Free of charge online textbook in GEOMETRY
https://www.algebra.com/algebra/homework/Triangles/GEOMETRY-your-online-textbook.lesson


to your archive and use it when it is needed.




</PRE>