In Triangle ABC, S is the midpoint of line segment AB and T and the midpoint if line segment AC, if AS = 6, CT = 8, and ST = 7, the permeter of ABC = 42?
in triangle ABC, S is the midpoint of line segment AC and R is the midpoint of BC. If AC = 18, BC = 22 and AB = 16 then RS =8?, ST = 11? and RT = 9?