Which best describes the sides of any square? a. only two sides are the same length. b. all sides are the same length. c. only two sides are parallel. d. all sides are parallel to each other.

The answer is B) all sides are the same length. Hope this helps! :D

B all sides are the same length.

A square is a quadrilateral with all equal sides and is a plane figure with four right angles (90 degree angles). A square is a parallelogram. This means that all sides are parallel to each other and will never intersect. So, D can be right, but is not the best description of a square. A rectangle is also a parallelogram, so D's description isn't specific to squares. C is partially correct, but is wrong considering a square has 4 parallel sides. A is incorrect, it is the description of a rectangle. That is why the BEST description of the sides of a square is B, all sides are the same length. 

I hope this helps:)