# Given three concurrent lines $a,b$ and $c$, find the circunference tangent to $a$ and $b$ and with center at $c$

I have these three lines, and I need to construct a circumference tangente to two lines and that has center at the other line. I tried to construct the perpendicular lines that passes through the midpoints of each segment of the triangle formed by $$a$$ and $$b$$, but they do not always intersect at a point in $$c$$. I have to find a way to trace the bissector of each segment in a way that they intersect in $$c$$. Can somebody help me?