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.
you divide the denominator by the numerator on both sides and if the quotients are equal then the fractions are equivalent
d i think
i dont understand the question? ?