Question 815347
{{{drawing(400,200,-1,11,-1,5,triangle(0,0,6,4,10,0),
green(line(6,0,6,4)),rectangle(5.7,0,6,.3),rectangle(6.4,0,6,.4)


 )}}}{{{matrix(21,1,

Only,those,two,congruent,right,angles, at,the, base, of,the,green(green),altitude,are,"formed,",so,the,correct,answer, is,"d.")}}}
<pre>
Edwin</pre>