pentagon=/البنتاجون

pentagon=/البنتاجون

ONLINE ETYMOLOGY DICTIONARY:

pentagon (n.)

plane figure with five angles and five sides, 1560s, from M.Fr. pentagone or directly from L.L. pentagonum "pentagon," from Gk. pentagonon, noun use of neuter of adjective pentagonos "five-angled," from pente "five" (see five) + gonia "angle" (see knee (n.)). The U.S. military headquarters Pentagon was completed 1942, so called for its shape; used allusively for "U.S. military leadership" from 1945. Related: Pentagonal.