#include <iostream>
#include <math.h>

using namespace std;

int main()
{
    double x[3];
    double y[3];
    const double PI = acos(-1.0);

    for (int i = 0; i < 3; ++i)
        cin >> x[i] >> y[i];

    double medPointX, medPointY;
    medPointX = x[1] + ((x[0] + x[2]) / 2 - x[1]) * 2 / 3;
    medPointY = y[1] + ((y[0] + y[2]) / 2 - y[1]) * 2 / 3;


    for (int i = 0; i < 2; ++i)
    {
        for (int j = i + 1; j < 3; ++j)
        {
            double fVectorX = x[i] - medPointX,
                fVectorY = y[i] - medPointY,
                sVectorX = x[j] - medPointX,
                sVectorY = y[j] - medPointY;


            double scalar = fVectorX * sVectorX + fVectorY * sVectorY;
            double a_len = sqrt(fVectorX * fVectorX + fVectorY * fVectorY);
            double b_len = sqrt(sVectorX * sVectorX + sVectorY * sVectorY);

            double alpha = acos(scalar / (a_len*b_len))*180/PI;

            cout.precision(2);
            cout << fixed << alpha << endl;
        }
    }

    return 0;
}