A Which equation is correct regarding the diagram of
circle O?
'Y
b
O m_XZY = {(a + b)
O m_XZY = {(a - b)
O m_XOY = {(a - b)
X
Om XOY =
Z
Z

answer: can and shows the work

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