Find the surface area of the rectangular prism shown below.
6 in
a
15 in
12 in

question:

could we have options?

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

d

because parallelagram have all 4 angels the same size dependeing and a rectangle and square are oth parallelogram