from math import pi,atan2
T=int(raw_input())
for i in range(T):
    raw_input()
    points=[map(float,raw_input().split()) for j in range(6)]
    cx,cy=0,0
    for j in range(6):
        cx+=points[j][0]
        cy+=points[j][1]
    cx/=6
    cy/=6
    #print cx,cy
    ans=60
    for j in range(6):
        points[j][0]-=cx
        points[j][1]-=cy
        s=atan2(points[j][1],points[j][0])
        if(s>-1e-10):
            ans=min(ans,s*360/2/pi)
    print "{0:.16f}".format(ans)