How do i triangulate this?

Hi community,
im still new to this software, but im trying to triangulate this mesh as a façade(having holes in the triangle as well). The triangulation does not need to be that small. How would i go about doing this? Thanks for the help in advance!

Hello - TraiangulateMesh would be the starting point - if you are looking to re-mesh to fewer polygons, try ReduceMesh that will also triangulate any quads, if I remember right.