Does a circle have zero edges or infinite edges?

It's one those questions that involves some philosophical aspects in it. So there is really no right or wrong answer. It all depends on what we meant by "infinity", a notion that we always have be a little careful with when used.

I would prefer to say a circle has 0 edges because it just naturally fits what we think a circle as. But it's not wrong to say a circle has infinite edges because a circle can be defined as a regular polygon with infinite sides

it has one edge, but the edge is not a straight line. There is no requirement for an edge to be a straight line unless you are discussing things that are defined as being formed by straight lines, in which case a circle would be excluded from that class of objects, given that it (obviously) is not constructed from any straight line.

A circle can be approximated (but not exactly reproduced) using an polygon of infinite edges having infinitesimally small lengths.

0

Technically zero edges because infinite edges would be like a decadecadecadecadecadecadecadeacaecagon sooo

0 edges

It's not a polygon. It has no vertices. You could say it has 1 edge.

no pi r sq added to lim