#define _CRT_SECURE_NO_WARNINGS

#include <iostream>
#include <cstdio>
#include <cstring>
#include <string>
#include <vector>
#include <cmath>
#include <stack>
#include <queue>
#include <map>
#include <set>
#include <algorithm>
#include <complex>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef vector<bool> vb;
typedef vector<vb> vvb;
typedef vector<int> vi;
typedef vector<vi> vvi;
#define all(c) (c).begin(), (c).end()
#define loop(i,a,b) for(int i=a; i<int(b); i++)
#define rep(i,b) loop(i,0,b)
#define each(e,c) for(auto& e:c)
#define iter(it,c) for(auto it=c.begin(); it!=c.end(); ++it)

ll const inf = 1<<28;
double const pi = acos(-1);

typedef complex<double> P;
typedef vector<P> L;

double cross(const P& a, const P& b) {
    return imag(conj(a)*b);
}
double dot(const P& a, const P& b) {
    return real(conj(a)*b);
}
int ccw(P a, P b, P c) {
    b -= a; c -= a;
    if (cross(b, c) > 0)   return +1;       // counter clockwise
    if (cross(b, c) < 0)   return -1;       // clockwise
    if (dot(b, c) < 0)     return +2;       // c--a--b on line
    if (norm(b) < norm(c)) return -2;       // a--b--c on line
    return 0;
}
bool intersectSS(const L &s, const L &t) {
    return ccw(s[0],s[1],t[0])*ccw(s[0],s[1],t[1]) <= 0 &&
        ccw(t[0],t[1],s[0])*ccw(t[0],t[1],s[1]) <= 0;
}

P ps[4];
L l;

bool solve(){
    int c=0;
    rep(i,3){
        L m{ps[i],ps[i+1]};
        if(intersectSS(l,m))c++;
    }
    return c==1;
}

int main(){
    int n;cin>>n;
    rep(_,n){
        rep(i,3){
            double x,y;cin>>x>>y;
            ps[i]=P(x,y);
        }
        ps[3]=ps[0];
        double a,b,c,d;
        cin>>a>>b>>c>>d;
        l={P(a,b),P(c,d)};
        cout << (solve()?"OK":"NG")<<endl;
    }
}