>>10007130taking the numberline of and plotting it on a graph, infinity would be the edge of a circle drawn all the way around the graph. No matter the direction (X+,X-,Y+,Y-,Z+,Z-), the direction from the absolute center (0,0,0) outward tends toward the singular (infinity). Sufficient negative numbers would be mathematicaly implied to reach towards the same infinity as sufficient positive numbers would, because its reaching towards the edge of the circle, and there is only one edge of a circle.
The idea of this circle represents an inverted point in respect to the (0,0,0) center, but all that is in the circle, positive, zero, and negative, compose the singular infinity in total.
More elaborately and extra-dimensionally, it might be better rationalized as infinity being abled to ignore the need of being a special circle and instead be a point connecting a line that is some extra-dimensional right angle from the center.