Isosceles Triangle - Two Mirror Sides

using System;
using System.Text;
using System.Collections.Generic;
using System.Linq;

public class IsoscelesTriangleThree
{
    public static void Main()
    {
        Console.OutputEncoding = Encoding.Unicode;
        char unicode = '\u00A9';
        int b = 6;
        int c = 0;
        // The halfTriangle list will be storing the first half of our isosceles triangle
        List<string> halfTriangle = new List<string>();

        // will be storing the half of the hypotenuse
        StringBuilder line = new StringBuilder();

        // calculates all strings necessary for one cathetus of the triangle
        // stores them in the halfTriangle list
        do
        {
            string space1 = new String(' ', b);
            string print = space1 + unicode;
            halfTriangle.Add(print);
            b = b - 1;
        } while (b != 0);

        // builds a string for a half-hypotenuse
        do
        {
            line.Append(unicode);
            c = c + 1;
        }
        while (c != 7);

        // storing this half-hypotenuse into the halfTriangle list
        halfTriangle.Add(line.ToString());

        // printing the left half of the triangle
        foreach (string str in halfTriangle)
        {
            Console.WriteLine(str);
        }

        // printing the right half of the triangle as a mirror image of the left one
        for (int i = 0; i < halfTriangle.Count; i++)
        {
            Console.SetCursorPosition(6, i);

            var temp = halfTriangle[i].Reverse();

            Console.WriteLine("{0, 7}", string.Join("", temp));
        }
    }
}