Finding the Area of a Triangle Using Coordinates of Vertices

The video tutorial explains how to calculate the area of a triangle using the coordinates of its vertices. It introduces the concept of dividing the triangle into trapeziums to simplify the calculation. The tutorial provides a step-by-step guide to finding the areas of these trapeziums and deriving the formula for the triangle's area. A simple trick is shared to help remember the formula, followed by an example to demonstrate its application.

Describe the formula for calculating the area of a trapezium.

What is the final formula for the area of triangle ABC derived from the trapeziums?

How can the formula for the area of a triangle be remembered using the trick mentioned?