Question 252381
That cannot be true! Look at this figure which is fairly accurate,
All four angle biscetors are drawn.  But as you can see, there is 
no rectangle enclosed at all:


{{{drawing(400,177+7/9, -1,8,-1,3,

line(0,0,6,0), line(6,0,7,2), line(7,2,1,2), line(1,2,0,0),
line (0,0,3.236067977,2), line(6,0,4.763932023,2),
line(2.236067977,0,1,2), line(7,2,2.763932023,0)

 )}}} 

Are you sure that you didn't mean "bisectors of the sides" 
instead of "bisectors of the angles"??? If so, repost, stating
exactly what you meant.

Edwin</pre>