Write an equation for the triangle below. A. 2x+x+(x+20)=180

B. 2x+x+x+20=180

C.(4x+20)=180

x=40

Step-by-step explanation:

solving for x: 4x= 180-20

                       x= 160/4 =40

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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