## anonymous one year ago Check my answer? http://prntscr.com/8nuzvc

1. anonymous

|dw:1444016495365:dw|

2. anonymous

@jim_thompson5910

3. jim_thompson5910

$\Large \triangle ABD \cong \triangle FEC$ so $\Large \angle ADB \cong \angle FCE$ |dw:1444017429640:dw|

4. anonymous

And since those two angles are congruent, then finding the third angle for the tiny triangle should be easy $$180^\circ = 45^\circ + 45^\circ + \theta$$