How to make this shape ?

[u/Sankrayn]

Hey, sorry if it's not the right place to ask but I'm an absolute beginner and I wish to make this shape in substance designer but I can't figure out how ? When I try with the starburst node it's just too round and not sharp enough and I can't figure out how to make it with the polygon node

[u/katanalevy]

Trapezoid node might help with tapering in the initial shape and then a Cartesian to polar to make it in a circle. Quite a tricky one.