Question 1168552
<pre>
He forgot one of the possible angles.  He just gave you 50°, and put 80° for the
other one, but that was given. Here are the two isosceles triangles you could
have.  What is the skinny angle at the top of the skinny triangle on the left?

{{{drawing(400,7600/31,-.5,5.7,-.5,3.3, locate(.41,2.2,"?"^o),
locate(.07,.37,80^o),locate(3.15,2.1,80^o), locate(1.7,.37,50^o),
triangle(0,0,.5,2.83564091,1.0),triangle(1.5,0,3.35083347,2.205737064,5.201666314,0)  )}}}

Edwin</pre>