All geometric constructs in reality must be built or come into being somehow so they do have a cause the chain of cause and effect for existence must originate at an "uncaused cause" at some point. So either the universe is eternal and its own "uncaused cause"( I think thats unlikely) or there must be something behind this universe being an uncaused cause.
"come into being somehow"
That phrase implies a time before which they did not exist, i.e. (3d analogy again) a height below the center of the earth, i.e. a nonsensical requirement that has nothing to do with the mathematics.