I’m not sure what it’s asking?

b and c will be reduced

Step-by-step explanation:

exterior angle= sum of other two angles

in the pic the sum is 152 so the exterior angle should've been 152 but it has been decreased so b and c will also decrease

central angle of a triangle has the same measure as its intercepted arc.

step-by-step explanation:

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh