The sum of the lengths of the bases and the height of a trapezoid are 13 inches and 6 inches respectively. Determine the area of a trapezoid

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

60: 45 =12: 9 =4: 3 so the answer is 4: 3