All examples in this Problem are a collection of dots.

An equivalent solution is "Dots can be arranged into a square lattice whose convex hull is a square vs. not so". - Leo Crabbe, Aug 01 2020

All examples in this Problem are a number of dots.

The examples are all arranged in a way that makes it easy for a human to understand.

An equivalent solution is "Dots can be arranged into a square lattice whose convex hull is a square vs. not so". - Leo Crabbe, Aug 01 2020

All examples in this Problem are a number of dots.

The examples are all arranged in a way that makes it easy for a human to understand.

An equivalent solution is "Dots can be arranged into a square lattice whose convex hull is a square vs. not so". This is probably how someone who is aware of square numbers would phrase it. - Leo Crabbe, Aug 01 2020

A single dot fits because 1 = 1*1.

A pair of dots does not fit because there is no integer x such that 2 = x*x.

All examples in this Problem are a number of dots.

The examples are all arranged in a way that makes it easy for a human to understand.

Square number of dots vs. non-square number of dots.

All examples in this Problem are a number of dots. The examples are all arranged in a way that makes it easy for a human to understand.

Square number of dots vs. not a square number of dots.

Jago Collins