#include<iostream>
#include<cmath>
using namespace std;
const double pi=acos(-1.0);
const double eps=1e-4;
struct Point
{
    double x,y;
}p[5],q[5];
int main()
{
    int T,i,j;
    Point o;
    double c=cos(pi*2/5),s=sin(pi*2/5);
    cin>>T;
    while(T--)
    {
        o.x=o.y=0;
        for(i=0;i<5;i++)
        {
            cin>>p[i].x>>p[i].y;
            o.x+=p[i].x;
            o.y+=p[i].y;
        }
        o.x/=5,o.y/=5;
        for(int i=0;i<5;i++)
            p[i].x-=o.x,p[i].y-=o.y;
        q[0]=p[0];
        for(i=1;i<5;i++)
        {
            q[i].x=q[i-1].x*c-q[i-1].y*s;
            q[i].y=q[i-1].y*c+q[i-1].x*s;
        }
        for(i=0;i<5;i++)
        {
            for(j=0;j<5;j++)
                if(fabs(p[j].x-q[i].x)<eps&&fabs(p[j].y-q[i].y)<eps)
                    break;
            if(j==5)
                break;
        }
        if(i==5)
            cout<<"Yes"<<endl;
        else
            cout<<"No"<<endl;
    }
    return 0;
}