Answer
x=90$^{\circ}$
m$\angle$BAC=90$^{\circ}$
m$\angle$B=45$^{\circ}$
Work Step by Step
m$\angle$B+m$\angle$C+m$\angle$BAC=180
$\frac{x}{2}$+$\frac{x}{2}$+x=180
4x=360
x=90$^{\circ}$
m$\angle$BAC=x=90$^{\circ}$
m$\angle$B=$\frac{x}{2}$=45$^{\circ}$
