pentagon
n. ஐங்கோணம், ஐந்து பக்கங்களுள்ள உருவம்.
Pen"ta*gon, n. Etym: [Gr. Penta-) + gwni`a angle: cf. L. pentagonium, F. pentagone.] (Geom.) Defn: A plane figure having five angles, and, consequently, five sides; any figure having five angles. Regular pentagon, a pentagon in which the angles are all equal, and the sides all equal.