Area and similitude
Two mirrors at 60° to show that by doubling the side of an equilateral triangle you get an equilateral triangle of four times the area.
© matematita
The image belongs to the sections...:
Other problems (From the exhibitions of matematita)
From "mirrors" (From "XlaTangente")
Images between two incident mirrors (From the exhibitions of matematita)
Area problems (2D geometry)
