Which of these has four equal sides?

Player #27327294, No. It is then a cube - not a square. A square is a polygon in 2D.

In 3D a square has 6 equal sides.

Player #16304386, I agree. I looked at the picture and didn't read the questions!

showing 3 dimensional figures and then asking which of these 2 dimensional shapes is ......confusing

I already knew this!!