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