Question 1197815
.


See the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/Triangles/The-line-segment-joining-the-midpoints-of-two-sides-of-a-triangle.lesson>The line segment joining the midpoints of two sides of a triangle</A>

in this site, &nbsp;&nbsp;Theorem &nbsp;2.



Your statement is proven there for &nbsp;ANY &nbsp;triangle:


&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The straight segment connecting midpoints of the two sides of a triangle 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;is of half of the length of the third side of the triangle.