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Pick's Theorem

Pick's Theorem A useful tool to calculate the areas of polygons whose vertices have integer coordinates.

In a Cartesian coordinate system, the vertices of a triangle are , and . Calculate the area of the triangle.

In a Cartesian coordinate system, the vertices of a polygon are and . Calculate the area of the polygon. Can you "cut" the polygon in two congruent parts to make your calculations easier and faster? Explain your strategy.