The book was likely finished sometime in late 1987 or early 1988]. II.The collapse of Communism in the Balkans. It is likely that Gorbachevâs ideas for liberalizing East European communist states worked out best in the Balkan states of Bulgaria and Romania.
A polygon is a  closed plane figure made of three or more straight line segments. The term originated from ancient Greek polygonon, which breaks down to polus (many) and gonia (angle). A polygon is a closed plane figure made of three or more straight line segments.
A polygon is closed shape with equal number of angles and sides. The sides are called edges and the two sides intersect to form vertices. A polygon with n sides would have n vertices and n angles. The Greek word âoctaâ means 8 and âgonâ means angles thus a polygon with eight angles is called an Octagon.