An Equilateral (equi = equal, lateral = sides) triangle (tri = three).
Any regular shaped polygon has equal angles and equal sides
A hexagon has all six sides in equal length and all angles in equal measure.
A square is a four-sided shape with all sides equal and all angles equal.
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.
Its a diamond :]
A rhombus
A rhombus.
The rectangle
square
The shape described is a parallelogram, specifically a rhombus. In a rhombus, opposite sides are equal in length, and opposite angles are equal. Additionally, none of its angles are 90 degrees, which differentiates it from rectangles and squares.
A rhombus has 4 sides of equal length, opposing parallel sides, and no right angles
A Rhombus