Answer:
The measure of angle EDC is [tex]60\°[/tex]
Step-by-step explanation:
we know that
The measurement of the external angle is the semi-difference of the arcs which comprises
so
[tex]m<EDC=\frac{1}{2}(arc\ EAB-arc\ EC )[/tex]
substitute the values
[tex]m<EDC=\frac{1}{2}(195\°-75\°)=60\°[/tex]
