Answer:
Option B 125°
Step-by-step explanation:
In this problem we need to calculate the measure of angle ∠6
we know that
The measure of the inner angle is the semi-sum of the arcs comprising it and its opposite.
see the attached figure to better understand the problem
∠6=(1/2)[arc AB+arc CD]
(arc AB+arc CD)=360°-(60°+50°)=250°
substitute
∠6=(1/2)[250°]=125°
