Effortlessly determine the area of any irregular trapezoid or general quadrilateral using the precise coordinates of its four vertices. Our free online tool simplifies complex geometry, providing instant and accurate results for land surveying, design, and educational purposes.
Formula:
The area of an irregular trapezoid (quadrilateral) with vertices (x1, y1), (x2, y2), (x3, y3), and (x4, y4) can be found using the Shoelace formula:
Area = 0.5 × |(x1y2 + x2y3 + x3y4 + x4y1) - (y1x2 + y2x3 + y3x4 + y4x1)|
Where:
- xn, yn: The X and Y coordinates of the n-th vertex.
- The vertices must be listed in either a clockwise or counter-clockwise order for the formula to work correctly.