a rhombus
A square is a parallelogram, but not all parallelograms are squares.
A parallelogram can be a square, but never can a square be a parallelogram. A square is defined as having all four sides the same and all four right angles. A parallelogram has to have two pairs of parallel sides.
a square
A square.
A square.
A square is a special kind of parallelogram. All four of its sides are the same length and all four of its angles are equal.
A rhombus
A rhombus
It is a special type of parallelogram, because all the sides are the same length. Rhombus is to parallelogram as square is to rectangle.
A rhombus is a special case of parallelogram (all 4 sides the same length). A square is a special case of rhombus (all 4 angles equal to 90°)
an equilateral triangle;)
A rhombus.