Question

in a triangle a PQR ifPQ is equal to Q R and L ,M, N are the midpoints of the sides PQ ,QR,and RP respectively prove that LN is equal to MN

Answer 1

since l and n are midpoints of PQ and PR then by mid point theorem Allen will be equal to half of QR similarly MN will be equal to half of PQ also PQ equal to QR then half PQ equal to half QR and LN = MN