A parallelogram can have four equal sides that will not meet at right angles. The term diamond can also be used in this context.
rhombus
A rhombus.
A square.
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 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
Trapezoid
A square is a plane geometric figure having 4 equal sides and 4 right angles.
A parallelogram can have four equal sides that will not meet at right angles. The term diamond can also be used in this context.
This depends what the figure is referencing. A figure is only a square if it has four sides, all equal, connected by four angles, all right angles (90°).
Square
square
four equal sides set at right angles
A square.
A square, of course.