Area of a Triangle

Area of a Triangle

## Formula

For vertices $$(x_1,y_1)$$, $$(x_2,y_2)$$ and $$(x_3,y_3)$$:

$$\Delta=\frac12\left|x_1(y_2-y_3)+x_2(y_3-y_1)+x_3(y_1-y_2)\right|$$

## Terminologies

- $$\delta$$ → Area of the triangle.

## Usage

- Used to calculate the area of a triangle when coordinates of its vertices are known.