Quadrilaterals

        

Quadrilaterals, Parallelograms, Squares & Rectangles

What is a Quadrilateral?   

A polygon is a flat two dimensional closed shape with straight sides. A quadrilateral is a 4 sided polygon. 

So a quadrilateral is a two dimensional closed shape with 4 straight sides.

A closed shape made up of 4 straight lines is a quadrilateral.

Is square also a type of quadrilateral?

Yes, A square is a specific type of quadrilateral in which all four sides are equal and all four interior angles are equal. 

All four interior angles of a square are right angles that is 90 degrees.

All the sides and interior angles of regular polygons are equal and a square is a regular quadrilateral.

Is rectangle also a type of quadrilateral?

Yes, a rectangle is also a specific type of quadrilateral in which all four interior angles are equal to 90 degrees. 

All four interior angles of a rectangle are right angles that is 90 degrees. Also in a rectangle the opposite sides are equal and parallel.

Is rhombus also a type of quadrilateral? 

Yes, a rhombus is a specific type of quadrilateral in which all four sides are equal and also in a rhombus opposite angles are equal and opposite sides are parallel.

Are parallelograms also types of quadrilaterals?

Parallelograms are also two dimensional shapes with four sides in which opposite sides are parallel and equal. 

So Parallelograms are types of quadrilaterals in which opposite sides are parallel and equal. 

In squares, rectangles and rhombuses opposite sides are parallel and equal and so these shapes are also specific types of parallelograms.

Apart from these, there are also other types of quadrilaterals such as Trapezium or Trapezoids.