Question 1152184

<a href="https://www.imageupload.net/image/CW60M"><img src="https://www.imageupload.net/upload-image/2020/02/08/rectangle-inscibed-in-isoscales-triangle.th.png" alt="rectangle-inscibed-in-isoscales-triangle.png" border="0" /></a>


the area of the triangle: 
{{{A[t]=(1/2)2b*h}}}
{{{A[t]=b*h}}}

the area of the  rectangle:
{{{A[r]=b*(h/2)}}}
{{{A[r]=bh/2}}}

=>proven that {{{A[r]=A[t]/2}}}