Question

help fiinding arc of a circle geometry problem

Answer 1

The measure of a central angle is equal to the measure of the intersected arc.

Then, arc CD is equal to 55º

Arc EDC is equal to the sum of ars CD and DE:

$\begin{gathered} \text{mEDC}=55º+90º \\ \text{mEDC}=145º \end{gathered}$