a rhombus or square.
A square.
If it has four equal sides, then two parallel sides implies two PAIRS of parallel sides. The shape is a rhombus.
A rhombus has four equal sides. A square is a type of a rhombus.
A polygon; specifically a tetragon. A two-dimensional shape with four equal sides and four right angles is a square. A two-dimensional shape with two sets of equal sides and four right angles is a rectangle. A two-dimensional shape with two sets of equal sides and two sets of equal angles is a parallelogram. A parallelogram where each opposite angel bisects the shape is a rhombus. A two-dimensional shape with one set of equal, parallel sides and two sets of equal angles is a trapezoid. A three-dimensional shape with four triangular faces is a tetrahedron.
a quadrilateral is a shape with four equal sides.
square
A parallelogram is a four sided shape where opposite sides are parallel and equal lengths. If you mean that ALL sides are equal lengths, you are looking for a rhombus.
Rectangle
A rectangle has four sides with two equal lengths.
A rhombus is a shape having two acute angles and four equal sides.
A "parallelogram" technically is a shape where opposite sides are equal and any shape with four sides is a "quadrilateral". Every square has four sides of equal length, so a square is both a parallelogram and a quadrilateral. A rhombus(or diamond shape) can have four sides of equal length and can be a parallelogram as well, so either are possibilities.
A square is a two-dimensional shape with four equal sides and four right angles.
The rectangle
The shape with equal sides next to each other is a square. A square has four equal sides and four right angles, making it a specific type of rectangle. Another shape with equal sides next to each other is an equilateral triangle, which has three equal sides and angles.
No shape has four equal sides and four different angles - either there are two pairs of equal angles, or all four angles are the same; or all sides are not the same length.
A shape with four equal straight sides is a square. In addition to having equal sides, a square also has four right angles. Another example of a shape with four equal sides is a rhombus, although its angles are not necessarily right angles. Both shapes are classified as quadrilaterals.
There is no such shape. If the four sides are equal it MUST be a parallelogram.