public static void Run()
{
//ExStart: GetAreaOfGeometry
var triangleRing = new LinearRing();
triangleRing.AddPoint(4, 6);
triangleRing.AddPoint(1, 3);
triangleRing.AddPoint(8, 7);
triangleRing.AddPoint(4, 6);
var triangle = new Polygon(triangleRing);
var squareRing = new LinearRing();
squareRing.AddPoint(0, 9);
squareRing.AddPoint(0, 7);
squareRing.AddPoint(2, 7);
squareRing.AddPoint(2, 9);
squareRing.AddPoint(0, 9);
var square = new Polygon(squareRing);
var multiPolygon = new MultiPolygon {
triangle, square
};
Console.WriteLine("{0:F}", triangle.GetArea()); // 4.50
Console.WriteLine("{0:F}", square.GetArea()); // 4.00
Console.WriteLine("{0:F}", multiPolygon.GetArea()); // 8.50
//ExEnd: GetAreaOfGeometry
}