namespace AtCoder;

#nullable enable

using System.Numerics;

static class Extensions
{
    public static T[] Repeat<T>(this int time, Func<T> F) => Enumerable.Range(0, time).Select(_ => F()).ToArray();
}

class AtCoder
{
    object? Solve()
    {
        var t = Int();
        var ans = new string[t];
        for (var i = 0; i < t; i++)
        {
            ans[i] = Solve2() ? "Yes" : "No";
        }
        Out(ans);
        return null;
    }

    bool Solve2()
    {
        var x1 = (long)Int();
        var y1 = (long)Int();
        var x2 = (long)Int();
        var y2 = (long)Int();
        var xx1 = (long)Int();
        var yy1 = (long)Int();
        var xx2 = (long)Int();
        var yy2 = (long)Int();
        if ((x1, y1) == (xx1, yy1) && (x2, y2) == (xx2, yy2)) return true;
        long D(long xa, long ya, long xb, long yb)
        {
            var dx = xa - xb;
            var dy = ya - yb;
            return dx * dx + dy * dy;
        }
        var da = D(x1, y1, x2, y2);
        var db = D(xx1, yy1, xx2, yy2);
        var p = (x1 - x2) * (yy1 - yy2) == (xx1 - xx2) * (y1 - y2);
        return da > db && p;
    }

    public static void Main() => new AtCoder().Run();
    public void Run()
    {
        var res = Solve();
        if (res != null)
        {
            if (res is bool yes) res = yes ? "Yes" : "No";
            sw.WriteLine(res);
        }
        sw.Flush();
    }

    string[] input = Array.Empty<string>();
    int iter = 0;
    readonly StreamWriter sw = new(Console.OpenStandardOutput()) { AutoFlush = false };

    #pragma warning disable IDE0051
    string String()
    {
        while (iter >= input.Length) (input, iter) = (Console.ReadLine()!.Split(' '), 0);
        return input[iter++];
    }
    T Input<T>() where T : IParsable<T> => T.Parse(String(), null);
    int Int() => Input<int>();
    void Out(object? x, string? separator = null)
    {
        separator ??= Environment.NewLine;
        if (x is System.Collections.IEnumerable obj and not string)
        {
            var firstLine = true;
            foreach (var item in obj)
            {
                if (!firstLine) sw.Write(separator);
                firstLine = false;
                sw.Write(item);
            }
        }
        else sw.Write(x);
        sw.WriteLine();
    }
    #pragma warning restore IDE0051
}