Double Math

Quadrilateral Definition in Math

Quadrilateral Definition in Math:

Quadrilateral Definition in Math
  • A quadrilateral (in geometry) can be defined as a closed,  two-dimensional shape which has four straight sides(edges).  
  • The polygon which has four vertices or corners.
  • Interior angles equal to 360^\circ[\katex]
  • A quadrilateral can be regular or irregular

We can find the shape of quadrilaterals in various things around us, for example in a chessboard, a deck of cards, a kite, a tub of popcorn, a signboard, and an arrow.

Quadrilateral Definition in Math

Types of Quadrilateral

There are many types of quadrilateral (in geometry). As the word, ‘Quad’ means 4 all these types of a quadrilateral have four sides, and the sum of angles of these shapes is 360 degrees.

some quadrilaterals are here

  • Trapezium
  • Parallelogram
  • Squares
  • Rectangle
  • Rhombus
  • Kite

Trapezium(Quadrilateral Definition)

Trapezium actually Describing a geometric shape, has two contradictory meanings:

Outside the US and Canada: A quadrilateral with at least one pair of parallel sides (known in the US as a trapezoid)

In the US and Canada: A quadrilateral with no parallel sides (known elsewhere as a general irregular quadrilateral)

Trapezium can also mean:

  • Trapezium (bone), a bone in the wrist
  • Trapezium (astronomy), a group of stars in the Orion Nebula

Parallelogram (Quadrilateral Definition)

The word “PARALLELOGRAM” was derived from the Greek word ‘parallelogrammon’ which means “bounded by parallel lines”. Hence, a parallelogram is a 4 sided figure that is bounded by parallel lines. It is a figure or shape in which the opposite sides are parallel and equal. Parallelograms are classified into three main types: 

  • Square
  • Rectangle
  • Rhombus

and each of them has its own unique properties and rules.