Area of Triangle Formed by Three Lines

Area of Triangle Formed by Three Lines

## Formula

For three lines:

$$a_1x+b_1y+c_1=0$$

$$a_2x+b_2y+c_2=0$$

$$a_3x+b_3y+c_3=0$$

the area can be found by first determining their pairwise intersection points and then applying the coordinate-area formula.

## Usage

- Used when the vertices of a triangle are obtained as intersections of three straight lines.