This morning's prompt was... I forgot.

So, modified UV sphere. Start off with a top row of 0 circumference, a quad with two top corners which are the same point, the north (or south?) pole, and two bottom corners roughly 2 pi in circumference. The triangle pair collapses at the pole into a single wide triangle which we need to subdivide into probably 6 triangles. This means the next row has that many columns and away we go again!!!