Area of Triangle in Coordinate Geometry

In a coordinate plane, consider triangle ABC with vertices A(1, 1), B(5, 5), and C(5, 1).

To find the area of triangle ABC, you can use the formula:

$$Area = \f\frac{1}{2} \left| x_1(y_2 - y_3) + x_2(y_3 - y_1) + x_3(y_1 - y_2) \right|$$

where the vertices of the triangle are represented as (x₁, y₁), (x₂, y₂), and (x₃, y₃).

Using the coordinates of triangle ABC, calculate the area.