As shown in the figure, given the line AB = 80cm, M is the midpoint of AB, P is on MB, n is the midpoint of Pb, and Nb = 14cm, find the length of PA

As shown in the figure, given the line AB = 80cm, M is the midpoint of AB, P is on MB, n is the midpoint of Pb, and Nb = 14cm, find the length of PA

∵ n is the midpoint of BP, M is the midpoint of ab ∵ Pb = 2Nb = 2 × 14 = 28cm ∵ AP = ab-bp = 80-28 = 52cm