There are infinite amounts of quadrilaterals that have sides that aren't all equal. In regular quadrilaterals, however there are rectangles and kites that have uneven lengths of sides.
In regular quadrilaterals, it's length times width.
There are always 2 diagonals in any quadrilateral whether or not it is irregular or regular
An equilateral parallelopiped, each of whose face is a rhombus.
Assuming you have a regular hexagon, drawing a line between every other vertex and the center will give you three congruent quadrilaterals (that also happen to be parallelograms... in fact, they are rhombuses).
There is only one regular quadrilateral, the square. A regular polygon must have equal sides and equal angles, and in the case of quadrilaterals that is a square.
Quadrilaterals are polygons. They can be regular or irregular.
Shapes with four sides
they have four sides
There are infinite amounts of quadrilaterals that have sides that aren't all equal. In regular quadrilaterals, however there are rectangles and kites that have uneven lengths of sides.
Most non-regular quadrilaterals.
In regular quadrilaterals, it's length times width.
A square is a rectangle in which all side lengths are the same.
Quadrilaterals and Triangles, if you're asking for polygon categories.
There are always 2 diagonals in any quadrilateral whether or not it is irregular or regular
All 4 sided quadrilaterals are polygons but a square is the only 4 sided regular polygon.
Congruence is a relationship between two shapes. ANY one shape cannot be congruent.