A pentagram (sometimes known as a pentalpha or pentangle or a star pentagon) is the shape of a five-pointed star drawn with five straight strokes.The word pentagram comes from the Greek word πεντάγραμμον (pentagrammon), from πέντε (pente), five + γραμμή (grammē), line.The word  pentacle  is sometimes used synonymously with pentagram. The word pentalpha is a learned modern (17th-century) revival of a post-classical Greek name of the shape.he pentagram contains ten points (the five points of the star, and the five vertices of the inner pentagon) and fifteen line segments. It is represented by the Schlaefli schläfli {symbol/5}. 2