I have a image below, kinda hard to see but was wondering if anyone has seen this formula and what its from and how to use it.
thx
$$A=\frac{1}{2}\sum\limits_{i=0}^{n-1}(x_iy_{i+1}-x_{i+1}y_i)$$
2026-03-25 02:58:57.1774407537
Formula for finding area for all polygons
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