Can you show us where the triangles are in this painting?
There are triangles everywhere, but I can show you some of them in this diagram. There are two equilateral triangles, shown by solid white lines – one pointing up to the distant cliff and one pointing down from the tips of the angel’s wings. Smaller triangles are made where they overlap. A triangle in dashed white lines contains Mary’s figure. The triangle is made up of the tips of the angel’s wings and the bottom of his jacket. The yellow triangle joins the top of the castle with the angel’s knee and Mary’s shoe.