Public domain
Six triangles
From the collection of Rijksmuseum, Amsterdam. Free to download, adapt and use — no permission needed.
About this work
In the corners are the names of the angles such as 'equilateral triangle' or 'obtuse-angled triangle'.
Rijksmuseum, Amsterdam’s own descriptionCredit lineZes driehoeken. 1820 - 1833. Jean Augustin Daiwaille. Rijksmuseum, Amsterdam. Public domain.