### Exercise condition:

4
In the triangle $$ABC$$ mid-side perpendicular of $$BC$$ crosses the side $$AC$$ at the point $$D$$. Determine the length of the segments $$AD$$ and $$DC$$ if a $$BD$$ $$=$$ 60$$cm$$ and $$AC$$ $$=$$ 80 $$cm$$.

$$AD =$$  $$cm.$$

$$DC =$$  $$cm.$$