Go: package main

import (
	"bufio"
	"os"
	"strconv"
	"strings"
	"fmt"
)

var scanner = bufio.NewScanner(os.Stdin)

func main() {
	scanner.Scan()
	n, _ := strconv.Atoi(scanner.Text())
	for i := 0; i < n; i++ {
		scanner.Scan()
		input := strings.Split(scanner.Text(), " ")
		buf := make([]float64, len(input))
		for j := range buf {
			buf[j], _ = strconv.ParseFloat(input[j], 64)
		}
		p1 := complex(buf[0], buf[1])
		p2 := complex(buf[2], buf[3])
		p3 := complex(buf[4], buf[5])
		pk := complex(buf[6], buf[7])
		ps := complex(buf[8], buf[9])
		kin := isAtSameSide(p3, pk, []complex128{p1, p2}) &&
			isAtSameSide(p1, pk, []complex128{p2, p3}) &&
			isAtSameSide(p2, pk, []complex128{p3, p1})
		sin := isAtSameSide(p3, ps, []complex128{p1, p2}) &&
			isAtSameSide(p1, ps, []complex128{p2, p3}) &&
			isAtSameSide(p2, ps, []complex128{p3, p1})
		if (kin || sin) && !(kin && sin) {
			fmt.Println("OK")
		} else {
			fmt.Println("NG")
		}
	}
}

func isAtSameSide(a, b complex128, line []complex128) bool {
	sa := (real(line[1]) - real(line[0]))*(imag(a)-imag(line[0]))+
		(imag(line[1])-imag(line[0]))*(real(line[0])-real(a))
	sb := (real(line[1]) - real(line[0]))*(imag(b)-imag(line[0]))+
		(imag(line[1])-imag(line[0]))*(real(line[0])-real(b))
	return (sa > 0 && sb > 0) || (sa < 0 && sb < 0)
}

C++: /**************** Geometrical Library ****************/

#include<cmath>
#include<vector>
#include<algorithm>

#define	EPS	1e-9

enum {CCW=1,CW=-1,ON=0};

#define	mp	make_pair
#define	pb	push_back

using namespace std;

class Point{
public:
	double x,y;
	Point(){}
	Point(double xx,double yy):x(xx),y(yy){}
};

class Line:public vector<Point>{
public:
	Line(const Point &a,const Point &b){
		pb(a),pb(b);
	}
};

class Segment:public Line{
public:
	Segment(const Point &a,const Point &b):Line(a,b){}
};

class Polygon:public vector<Point>{};

class Circle{
public:
	Point c;
	double r;
	Circle(const Point &cc,double rr) : c(cc),r(rr){}
};

Point &operator +=(Point &a,const Point &b){
	a.x+=b.x,a.y+=b.y;
	return a;
}

Point &operator -=(Point &a,const Point &b){
	a.x-=b.x,a.y-=b.y;
	return a;
}

Point &operator *=(Point &a,double c){
	a.x*=c,a.y*=c;
	return a;
}

Point &operator /=(Point &a,double c){
	a.x/=c,a.y/=c;
	return a;
}

Point operator +(const Point &a,const Point &b){
	Point c=a;
	return c+=b;
}

Point operator -(const Point &a,const Point &b){
	Point c=a;
	return c-=b;
}

Point operator *(double c,const Point &a){
	Point b=a;
	return b*=c;
}

Point operator /(const Point &a,double c){
	Point b=a;
	return b/=c;
}

bool operator <(const Point &a,const Point &b){
	return (a.x==b.x)?(a.y<b.y):(a.x<b.x);
}

bool operator >(const Point &a,const Point &b){
	return b<a;
}

double dot(const Point &a,const Point &b){
	return a.x*b.x+a.y*b.y;
}

double cross(const Point &a,const Point &b){
	return a.x*b.y-a.y*b.x;
}

double dis2(const Point &a,const Point &b){
	return (a.x-b.x)*(a.x-b.x)+(a.y-b.y)*(a.y-b.y);
}

int ccw(const Point &a,Point b,Point c){
	b-=a,c-=a;
	double rotdir=cross(b,c);
	if(rotdir>EPS)		return CCW;
	if(rotdir<-EPS)		return CW;
	return ON;
}

Polygon ConvexHull(vector<Point> ps){
	int n=ps.size();
	sort(ps.begin(),ps.end());

	vector<Point> ch_u(n);
	int n_u=0;
	for(int i=n-1;i>=0;i--){
		ch_u[n_u++]=ps[i];
		while(n_u>=3 && ccw(ch_u[n_u-3],ch_u[n_u-2],ch_u[n_u-1])!=CCW){
			ch_u[n_u-2]=ch_u[n_u-1];
			n_u--;
		}
	}

	vector<Point> ch_l(n);
	int n_l=0;
	for(int i=0;i<n;i++){
		ch_l[n_l++]=ps[i];
		while(n_l>=3 && ccw(ch_l[n_l-3],ch_l[n_l-2],ch_l[n_l-1])!=CCW){
			ch_l[n_l-2]=ch_l[n_l-1];
			n_l--;
		}
	}

	Polygon ch;
	for(int i=0;i<n_u-1;i++)	ch.pb(ch_u[i]);
	for(int i=0;i<n_l-1;i++)	ch.pb(ch_l[i]);
	return ch;
}
/*
bool parallel(const Line &l,const Line &m){
	return abs(cross(l[1]-l[0],m[1]-m[0]))<EPS;
}

bool orthogonal(const Line &l,const Line &m){
	return abs(dot(l[1]-l[0],m[1]-m[0]))<EPS;
}
*/
inline void calc_abc(const Line &l,double &a,double &b,double &c){	// l : ax+by+c=0
	a=l[0].y-l[1].y;
	b=l[1].x-l[0].x;
	c=l[0].x*l[1].y-l[1].x*l[0].y;
}

bool intersect(const Line &l,const Line &m,Point *p=NULL){
	// this routine also returns true in case "M is on L", "M sessuru L", etc,.
	if(abs(cross(l[1]-l[0],m[1]-m[0]))>EPS
	|| abs(cross(l[1]-l[0],m[0]-l[0]))<EPS){
		if(p){
			double a1,b1,c1,a2,b2,c2;
			calc_abc(l,a1,b1,c1);
			calc_abc(m,a2,b2,c2);
			double det=a1*b2-a2*b1;
			if(abs(det)<EPS)	*p=l[0];	// l == m
			else{
				p->x=(b1*c2-b2*c1)/det;
				p->y=(a2*c1-a1*c2)/det;
			}
		}
		return true;
	}
	return false;
}

bool intersect(const Segment &s,const Segment &t,Point *p=NULL){
	if(max(s[0].x,s[1].x)<min(t[0].x,t[1].x)
	|| max(t[0].x,t[1].x)<min(s[0].x,s[1].x)
	|| max(s[0].y,s[1].y)<min(t[0].y,t[1].y)
	|| max(t[0].y,t[1].y)<min(s[0].y,s[1].y))	return false;

	if(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){
		if(p){
			double a1,b1,c1,a2,b2,c2;
			calc_abc(s,a1,b1,c1);
			calc_abc(t,a2,b2,c2);
			double det=a1*b2-a2*b1;
			if(abs(det)<EPS){	// s is parallel to t
				Point q[3]={s[0],s[1],t[0]};
				for(int i=0;i<3;i++){
					if(dot(q[i]-s[0],q[i]-s[1])<EPS && dot(q[i]-t[0],q[i]-t[1])<EPS){
						*p=q[i];
						break;
					}
				}
			}
			else{
				p->x=(b1*c2-b2*c1)/det;
				p->y=(a2*c1-a1*c2)/det;
			}
		}
		return true;
	}
	return false;
}

Point perp_foot(const Point &p,const Line &l){
	double a,b,c;
	calc_abc(l,a,b,c);
	return p-(a*p.x+b*p.y+c)/(a*a+b*b)*Point(a,b);
}

Line perp_bisector(const Point &a,const Point &b){
	return Line(Point((a.x+a.y+b.x-b.y)/2,(b.x+b.y-a.x+a.y)/2),
				Point((b.x+b.y+a.x-a.y)/2,(a.x+a.y-b.x+b.y)/2));
}
/*
double area(const Point &a,const Point &b,const Point &c){
	return abs(cross(b-a,c-a))/2;
}
*/
double area(const Polygon &pl){
	int n=pl.size();
	double a=0;
	for(int i=0;i<n;i++)	a+=cross(pl[i],pl[(i+1)%n]);
	return abs(a)/2;
}

/**************** Library END ****************/

#include<cstdio>

int main(){
	int n;	scanf("%d",&n);
	while(n--){
		Point a,b,c,star[2];
		scanf("%lf%lf%lf%lf%lf%lf%lf%lf%lf%lf",
			&a.x,&a.y,&b.x,&b.y,&c.x,&c.y,&star[0].x,&star[0].y,&star[1].x,&star[1].y);
		bool in[2];
		for(int i=0;i<2;i++){
			int cnt=0;
			cnt+=ccw(a,b,star[i]);
			cnt+=ccw(b,c,star[i]);
			cnt+=ccw(c,a,star[i]);
			in[i]=(cnt==3*CCW || cnt==3*CW);
		}
		puts(in[0]==in[1]?"NG":"OK");
	}
	return 0;
}