Suppose you're bicycling along a straight road then suddenly starts sloping up a hill you want to know what the angle measure of the slope is but you can't measure inside the hill

b

step-by-step explanation:

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.

entering that problem on the tube might get you an answer