Question 15
In a quadrilateral $ABCD$, $BC\parallel AD$, $BC=26$ cm, $AD=5$ cm, $AB=10$ cm and $CD=17$ cm. The bisectors of $\angle A$ and $\angle B$ intersect at $M$ while the bisectors of $\angle C$ and $\angle D$ intersect at $N$. Find the length, in cm, of $MN$.
Show your detailed solution.
Show your detailed solution.