using System;

using System.Linq;

const int DEPTH = 4;

​

Enumerable

  .Range(1,DEPTH)

  .Select(x => string.Join(" ", Enumerable.Repeat("°",x)).PadLeft(x+DEPTH-1))

  .ToList()

  .ForEach(Console.WriteLine);

​

int a=1;

for(int i=0;i<4;i++) {

for(int j=0;j<3-i;j++){

Console.Write(" ");}

for(int j=0;j<a;j++){

Console.Write("° ");}

a=a+1;

Console.WriteLine();}