Not necissarily. Quadrilateral simply says it has 4 sides. A rectangle has perpendicular sides. Equilateral means that the sides are of equal length (like a square, which is a special case rectangle)
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It is called a square. The clues: equilateral means all sides are of equal length; equiangular means all angles are of the same degrees; quadrilateral means the shape has four sides. The only shape that qualifies is a rectangle [includes squares.]
A square is a quadrilateral with four equal sides and four right angles. It is also known as a regular quadrilateral or a regular tetragon. In geometry, a square can also be referred to as a rhombus (a quadrilateral with all sides of equal length) or a rectangle (a quadrilateral with opposite sides of equal length and all angles equal to 90 degrees).
no it is a quadrilateral
A square.
No, equilateral and regular are the same thing.