#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>

#include <atcoder/all>
#define rep(i, a, b) for (ll i = (ll)(a); i < (ll)(b); i++)
using namespace atcoder;
using namespace std;

typedef long long ll;

using mint = modint998244353;

struct Fraction {
    /**
     * p / q
     * https://atcoder.jp/contests/abc390/submissions/72321330
     */
    mint p, q;
    Fraction(ll P = 0, ll Q = 1) : p(P), q(Q) {}
    Fraction(mint P, mint Q) : p(P), q(Q) {}

    Fraction operator+(const Fraction &other) const {
        return Fraction(p * other.q + q * other.p, q * other.q);
    }
    Fraction operator-(const Fraction &other) const {
        return Fraction(p * other.q - q * other.p, q * other.q);
    }
    Fraction operator*(const Fraction &other) const {
        return Fraction(p * other.p, q * other.q);
    }
    Fraction operator/(const Fraction &other) const {
        return Fraction(p * other.q, q * other.p);
    }
};

pair<Fraction, Fraction> f(tuple<ll, ll, ll> a, tuple<ll, ll, ll> b) {
    auto [ax, ay, az] = a;
    auto [bx, by, bz] = b;
    Fraction kake(az, az - bz);
    auto dx = ax - bx;
    auto dy = ay - by;
    auto dz = az - bz;
    pair<Fraction, Fraction> ret = {(Fraction)ax + (Fraction)dx * kake,
                                    (Fraction)ay + (Fraction)dy * kake};
    return ret;
}

void input(tuple<ll, ll, ll> &A) {
    ll x, y, z;
    cin >> x >> y >> z;
    A = {x, y, z};
}

mint g(pair<Fraction, Fraction> a, pair<Fraction, Fraction> b,
       pair<Fraction, Fraction> c) {
    auto [ax, ay] = a;
    auto [bx, by] = b;
    auto [cx, cy] = c;
    Fraction adx = ax - cx, ady = ay - cy;
    Fraction bdx = bx - cx, bdy = by - cy;
    Fraction t = adx * bdy - ady * bdx;
    mint ret = -t.p / t.q / 2;
    return ret;
}

void solve() {
    tuple<ll, ll, ll> A, B, C, P;
    input(A);
    input(B);
    input(C);
    input(P);
    auto p = f(P, A);
    auto q = f(P, B);
    auto r = f(P, C);
    mint ans = g(p, q, r);
    cout << ans.val() << '\n';
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout << fixed << setprecision(15);
    int t;
    cin >> t;
    while (t--) solve();
}