How do you add or subtract rational expressions and identify any excluded values? To add or subtract rational expressions, find and apply the
(GCD or LCD) and then simplify. For each situation, the excluded values are the values that make the denominator (Infinity/ 0 /-infinity) in the
(original form/ numerator) or in the simplified (form/ numerator).

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