static void Main(string[] args)
{
StringBuilder result = new StringBuilder();
try
{
Triangle triangle = new Triangle(12, 7, 8);
result.Append($"{triangle}\r\n");
result.Append(string.Format("Triangle perimeter: {0:0.##}\r\n", triangle.GetTrianglePerimeter()));
result.Append(string.Format("Triangle square: {0:0.##}\r\n", triangle.GetTriangleSquare()));
Console.WriteLine(result);
}
catch (ArgumentException e)
{
Console.WriteLine(e.Message);
}
Console.ReadLine();
}
