Based on the diagram below, which of the following must always be true? a.) m< 1 = m< 2
b.) m< 1 = m< 3
c.) m< 1 + m< 2 = m< 4
d.) m< 1 + m< 3 = m< 4

the answer is 54 sq. ft. i just did this question, on odyssey ware, and it was right. make brainliest.

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