#include<bits/stdc++.h>
using namespace std;
using ll = long long;

double my_atan(ll x, ll y){
	if(x == 0)
		return asin(1);
	if(y == 0){
		if(x >= 0) return 0;
		else return acos(-1);
	}
	double res = atan(double(y) / double(x));
	if(res < 0) res += acos(-1);
	return res;
}

void solve(){
	ll ax,ay,bx,by,cx,cy;
	cin >> ax >> ay >> bx >> by >> cx >> cy;
	cout << (my_atan(ax,ay) + my_atan(bx,by) == my_atan(cx,cy) ? "Yes" : "No") << endl;
}


int main(){
	int t;
	cin >> t;
	while(t--)
		solve();
}