public override double Perimeter()
{
return
(Point.DistanceBetween(points[0], points[1]) +
Point.DistanceBetween(points[1], points[2]) +
Point.DistanceBetween(points[2], points[0]));
}
public static Double TriangleArea(Point A, Point B, Point C)
{
Double a = Point.DistanceBetween(B, C);
Double b = Point.DistanceBetween(A, C);
Double c = Point.DistanceBetween(B, A);
Double p = (a + b + c) / 2.0;
Double tmp = p * (p - a) * (p - b) * (p - c);
if (tmp < 0)
{
throw new ArgumentOutOfRangeException("Wrong triangle");
}
return(Math.Sqrt(tmp));
}
