Answer
The unknown angle is 67$^{\circ}$.
Work Step by Step
The sum of the angle in a Triangle is 180$^{\circ}$.
Here we will solve for the unknown angle. We will label it $X$.
Therefore:
180$^{\circ}$ = 46$^{\circ}$ + 67$^{\circ}$ + $X$
$X$ = 180$^{\circ}$ - (46$^{\circ}$ + 67$^{\circ}$)
$X$ = 180$^{\circ}$ - (113$^{\circ}$)
$X$ = 67$^{\circ}$
