Robbins pentagon [SEP] named after
Robbins pentagon
In geometry, a Robbins pentagon is a cyclic pentagon whose side lengths and area are all rational numbers.
History.
Robbins pentagons were named by after David P. Robbins, who had previously given a formula for the area of a cyclic pentagon as a function of its edge lengths. Buchholz and MacDougall chose this name by analogy with the naming of Heron triangles after Hero of Alexandria, the discoverer of Heron's formula for the area of a triangle as a function of its edge lengths.
Area and
Carolina. He held this position until 2009, when he was named Commanding General of the 88th Regional Support Command and Senior Commander at Fort McCoy in Monroe County, Wisconsin.
In 2012, MG Lesniak was assigned as the Deputy Commanding General-Support, US Army Reserve Command at Ft Bragg, North Carolina. In 2014 he was assigned as the Deputy Chief of the US Army Reserve at the Pentagon. He retired after over 39 years of service in Sep 2015.
He has been awarded the Distinguished Service Medal with