Aperture Diaphragm in Blender 2.8 Blender Newbie here. 

I looked for a way to model an aperture lens and found this question: How do I rig each blade to fan out like an aperture lens?

The questions has been answered very well (Thanks Carlo) but when I try to redo this in Blender 2.8 I'm stuck at the following point (yes, right in the beginning).

I have created a triangle and a circle. The triangle is child of the circle. I activated Instancing on Verts because this is from what I understood the new "duplivert". 
But, there is not "rotation" setting in Instancing and I have no idea how to rotate the instanced triangles so that they are pointing to the center. 



Or is there a better way to achieve this? 

I tried the array modifier but this need the Pivot Point to be in the center (and I need it elsewhere for the copy rotation constraint afterwards)

I tried spinning but this does not work at all for flat objects like a plane.

I really tried to find a solution for a few hours now and you are my last hope. :)

Thanks in advance for any hint.

EDIT: 

Once I try to use Align to Vertex Normal it's getting out of hands. :)

Is there a way to adjust the vertex normal or what am I doing wrong?
It's still there, just the name is changed :).
Now it's called  Align to Vertex Normal ✓



When setting up the constraint, change Mix to Add.
Otherwise the triangles won't line up later.



You can add the constraint to other objects using Object > Constraint > Copy Constraints. Just make sure, the constraint isn't on the circle itself :).