Drag the vertices of the polygons and count inner points and boundary points to find the area using Pick Formula (A) = I + B/2 -1. [br][b]Important Definitions:[br]Lattice Points: [/b]Lattice points are points in a coordinate system whose coordinates are all integers. In a two-dimensional Cartesian coordinate system, a lattice point is represented as ((x, y)), where both (x) and (y) are integers. For example, (1, 0), (-2, 4), etc., are lattice points, but (1/2 , 2), (1.5, 0) etc., are not lattice Points.[br][b]Lattice Polygon: [/b]A lattice polygon is a polygon whose vertices are lattice points, i.e., points with integer coordinates ((x, y)) in the Cartesian plane. These polygons are also called grid polygons or integral polygons. [br]For example:[list=1][*]Square with vertices at ((0, 0), (2, 0), (2, 2), (0, 2)).[/*][*]Triangle with vertices at ((1, 1), (3, 1), (2, 4)).[/*][*]Hexagon with vertices at ((0, 0), (1, 1), (2, 0), (1, -1), (0, -1), (-1, 0)).[/*][/list]I = No of Interior lattice points[br]B= No of boundary lattice points.[br]Area of Polygon (A) = I + B/2 -1. [br]