It is a regular quadrilateral in the form of a square
A parallelogram can have four equal sides that will not meet at right angles. The term diamond can also be used in this context.
A rectangle is a plane figure with four straight sides and four right angles, esp. one with unequal adjacent sides. A square is a plane figure with four equal straight sides and four right angles. A rhombus is a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides.
A rectangle
A square.
rhombus
A figure with four equal sides and no right angles is a rhombus. A rhombus is comprised of two acute angles and two obtuse angles.
A four sided figure with four equal sides and no right angles is a diamond, or a rhombus. If it had four right angles, it would be a square.
a square
A square is a plane geometric figure having 4 equal sides and 4 right angles.
Trapezoid
A parallelogram can have four equal sides that will not meet at right angles. The term diamond can also be used in this context.
rectangles squares
A figure with 4 equal sides and 4 equal angles is a square :)
square
four equal sides set at right angles
Square
A square.