T=int(input())
for t in range(T):
    x1,y1,x2,y2,X1,Y1,X2,Y2=map(int,input().split())
    dx,dy=x2-x1,y2-y1
    dX,dY=X2-X1,Y2-Y1
    if (x1,y1,x2,y2)==(X1,Y1,X2,Y2):
        ans="Yes"
    elif dx*dX+dy*dY>=0 and (dx*dX+dy*dY)**2==(dx**2+dy**2)*(dX**2+dY**2) and (dx**2+dy**2)>(dX**2+dY**2):
        ans="Yes"
    else:
        ans="No"
    print(ans)