public bool IsRightTriangle()
{
bool result = true;
if (Math.Pow(EdgeAB.Length(), 2.0) + Math.Pow(EdgeBC.Length(), 2.0) != Math.Pow(EdgeCA.Length(), 2.0))
{
if (Math.Pow(EdgeBC.Length(), 2.0) + Math.Pow(EdgeCA.Length(), 2.0) != Math.Pow(EdgeAB.Length(), 2.0))
{
if (Math.Pow(EdgeCA.Length(), 2.0) + Math.Pow(EdgeAB.Length(), 2.0) != Math.Pow(EdgeBC.Length(), 2.0))
{
result = false;
}
}
}
return(result);
}
//Площадь треугольника по трем сторонам
public override double Area()
{
double semiPerimeter = (EdgeAB.Length() + EdgeBC.Length() + EdgeCA.Length()) / 2.0;
return(Math.Sqrt(semiPerimeter * (semiPerimeter - EdgeAB.Length()) * (semiPerimeter - EdgeBC.Length()) * (semiPerimeter - EdgeCA.Length())));
}