Making round figures
An exhibit of matemilano in the section “Maxima and minima” proposes to make different figures using the same number of triangular cards (so, the figures will have the same area) and to tell which of them has the minimum perimeter.
The image belongs to the sections...:
From "fun with hexagons" (From "XlaTangente")
Maximum and minimum (From the exhibitions of matematita)
Objects (From the exhibitions of matematita)
Area problems (2D geometry)