Points e, f, and d are located on circle c. the measure of
arc ed is 1080
what is the measure of angle ecd?
o 54
o 72
o 108
o126

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it