it is an ....
It is an IRREGULAR shape.
a quadrilateral
this shape is called a trapizoid see heres a picture!
a shape with 5 equal sides is a pentagon
That depends on what you mean by "diamond shape." In a general shape, no, the sides need not be exact. If the shape is distinctly called a "rhombus," then mathematically speaking, yes, all sides must be equal, per the definition of a rhombus.
It is an irregular shape or polygon that doesn't have all sides equal
A shape with 8 equal sides is called a regular octagon.
It is an IRREGULAR shape.
Names for shapes that have equal sides are called EQUILATERAL.
A triangle that has no equal sides is called scalene.
An irregular heptagon.
If it has four equal sides, then two parallel sides implies two PAIRS of parallel sides. The shape is a rhombus.
A regular polygon
a circle
pentagon
A rhombus by definition has 4 equal sides. So does a square.
a shape with 10 sides is called a decagon.