The perimeter is the total distance around the edge of a 2D shape. Examples of units of distance are millimetres (mm), centimetres (cm) and metres (m). The perimeter of any 2D shape can be found ...

How about 10-D? In 1919, Polish mathematician Theodor ... Shing-Tung Yau of Harvard University, described six-dimensional geometrical shapes that superstring theorists say fit the bill for the ...