a rhombusNotice that if all 4 sides are equal, then they must be parallel.
Any polygon with four or more sides can have a pair of parallel sides. It is also possible to to have non-polygonal shapes - eg a cigar-shape - that has parallel sides.
It can have anywhere between 0 and 12 pairs of parallel sides.
any rhombus
A triangle as no other 2d shape can have 3 sides.
a rhombusNotice that if all 4 sides are equal, then they must be parallel.
A square, a rectangle or a rhombus !
a trapizoid is the 2d shape for that
A diamond is a 3D shape, specifically a type of polyhedron known as a rhombus. A rhombus is a quadrilateral with all sides of equal length, opposite sides parallel, and opposite angles equal. In a three-dimensional space, a diamond shape is a polyhedron with four faces that are congruent rhombi.
Any polygon with four or more sides can have a pair of parallel sides. It is also possible to to have non-polygonal shapes - eg a cigar-shape - that has parallel sides.
It can have anywhere between 0 and 12 pairs of parallel sides.
rhombus
trapezoid
any rhombus
A triangle as no other 2d shape can have 3 sides.
Any polygon with four or more sides can have parallel lines. So also can some irregular shapes.
A 2D shape with 9 sides is called a Nonagon.