A square has four sides so it is a quadrilateral.
All sides of a square are of equal length so it is equilateral.
All angles of a square are of equal measure so it is equiangular.
A quadrilateral that is equilateral and equiangular is a regular quadrilateral.
Yes
A square is a regular 4 sided quadrilateral
It is a square
It is a square
Only if the quadrilateral is a square.
A square
Yes, it is.
Yes
a square
A square is a regular quadrilateral.
Each of the four interior angles of a square (i.e. a regular quadrilateral) measures 90 degrees
A square is a regular 4 sided quadrilateral