Theory:

A quadrilateral is a plane figure that has four sides or edges, so having four corners or vertices. Quadrilaterals will typically be of standard shapes with four sides like rectangle, square, trapezium and kite or irregular and uncharacterized.
Types of Quadrilaterals: There are many types of quadrilaterals. As the word ‘Quad’ means four all these types of a quadrilateral have four sides and the sum of angles of these shapes is 360 degrees.
  • Trapezium
  • Parallelogram
  • Square
  • Rectangle
  • Rhombus
Classification of Quadrilaterals:  
Quadrilaterals:                  Properties                          Diagram
TrapeziumTwo sides are parallelTrapezium.png
ParallelogramTwo sides are parallel, and the opposite angles are equalpar.png
RhombusParallelogram with four Equal sidesrhombus.png
SquareFour right angles and Four equal sides             squ.png
Rectanglefour right sides and Opposite sides are Equal       Rect.png