> They Keystone is the top part of the pyramid
No, this is called a "capstone".
Key is MI and NSA.
Stone is Trump and Patriots.
Q told us.
Re-read crumbs and don't make up stuff!
And as with NK.
A triangle is a two dimensional object, it doesn't have a "Keystone", which is reserved for three dimensional objects, like a pyramid, for example.
A pyramid is topped by a "capstone".
Only an arch can have a "keystone".