Quadrilaterals:

Quadrilaterals:

A quadrilateral is a polygon having 4 sides. ABCD is a quadrilateral and AC and BD are its diagonals.The word quadrilateral is made of the words quad (meaning "four") and lateral (meaning "of sides").You may wonder why should we study about quadrilaterals (or parallelograms)

Look around you and you will find so many objects which are of the shape of a
quadrilateral - the floor, walls, ceiling, windows of your classroom, the blackboard,
each face of the duster, each page of your book, the top of your study table etc.


One of the easiest way to learn about Quadrilaterals is to learn about the Properties of a Quadrilaterals.


Two sides of a quadrilateral, which have no common point, are called opposite sides.
In the diagram, AB and DC is one pair of opposite sides.
AD and BC is the other pair of opposite sides.

Consecutive Sides of a Quadrilateral

Two sides of a quadrilateral, which have a common end point, are called consecutive sides. In the diagram,
AB and BC is one pair of consecutive sides.
BC, CD; CD, DA; and DA, AB are the other three pairs of consecutive sides.

Opposite Angles of a Quadrilateral

Two angles, which do not include a side in their intersection, are called the opposite angles of a quadrilateral.

Consecutive Angles of a Quadrilateral

Two angles of a quadrilateral, which include a side in their intersection, are called consecutive angles.

Hope you like the above example of Quadrilaterals.
Please leave your comments, if you have any doubts.