Circle f is congruent to circle j, and ∠efd ≅ ∠gjh. m∠dfe = 80°. what is the measure of arc gh? °

arc GH=80°

Step-by-step explanation:

we know that

If circle F is congruent to circle J

and

∠EFD ≅ ∠GJH

then

arc GH ≅ arc ED

Find the measure of arc ED

arc ED =∠EFD > by central angle

so

arc ED=80°

therefore

arc GH=80°

isi

step-by-step explanation:

use that smart brain

step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value