Question

If = 80°, and m∠BED = 25°, what is ?

55°
30°
65°
20°

Answer 1

the complete question in the attached figure

we know that
The measure of the external angle is the semidifference of the arcs that it covers.
so
m∠BED =(1/2)*[mAC-mBD]-------> solve for mBD
mBD=mAC-2m∠BED
mBD=80-2*25--------> mBD=30°

the answer is
mBD=30°

Answer 2

Answer:

I believe 30 degrees is the correct answer

Step-by-step explanation: