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If = 80°, and m∠BED = 25°, what is ? 55° 30° 65° 20°
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2 votes
If = 80°, and m∠BED = 25°, what is ?

55°
30°
65°
20°

User Milla Tidy
by
6.6k points

2 Answers

2 votes

Answer:

I believe 30 degrees is the correct answer

Explanation:

User Babsdoc
by
5.4k points
3 votes
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°
If = 80°, and m∠BED = 25°, what is ? 55° 30° 65° 20°-example-1
User Sherwood Callaway
by
6.7k points
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