X1018

X512-CROSS CONJUGATE OF X1

< A B C >: Reference Triangle △ABC [ A B ]: Sideline AB (Base c = 1) [ B C ]: Sideline BC (Side a) [ C A ]: Sideline CA (Side b) { 1, 39 }: Central Line L(1, 39) { 9, 80 }: Central Line L(9, 80) { 100, 101 }: Central Line L(100, 101) { 63, 544 }: Central Line L(63, 544) { 40, 728 }: Central Line L(40, 728) { 163, 643 }: Central Line L(163, 643) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_512 = ISOGONAL CONJUGATE OF X(99) (1.0394, -0.1040) X_1 = INCENTER (0.5714, 0.2333) X_39 = BROCARD MIDPOINT (0.5778, 0.2305) X_9 = MITTENPUNKT (0.5110, 0.1615) X_80 = REFLECTION OF INCENTER IN FEUERBACH POINT (0.8980, -0.1000) X_100 = ANTICOMPLEMENT OF FEUERBACH POINT (0.1429, 0.4666) X_101 = Ψ(INCENTER, SYMMEDIAN POINT) (0.2143, 0.5249) X_63 = ISOGONAL CONJUGATE OF X(19) (0.4566, 0.0823) X_544 = DIRECTION OF VECTOR AX + BX + CX, where X = X(101) (0.1236, 0.6161) X_40 = BEVAN POINT (0.4286, -0.0292) X_728 = INTERSECTION OF LINES X(8)X(9) AND X(57)X(345) (0.3648, 0.0624) X_163 = TRILINEAR PRODUCT X(6)*X(110) (0.3174, 0.5883) X_643 = TRILINEAR MULTIPLIER FOR KIEPERT PARABOLA (0.0142, 0.3704) X_1018 = -CROSS CONJUGATE OF X(1) (0.1051, 0.4358) A B C X512 X1 X39 X9 X80 X100 X101 X63 X544 X40 X728 X163 X643 X1018 (a, b, c) = (5, 6, 7) | AB = 1

X1018 (X512-CROSS CONJUGATE OF X1) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_1018 = X_512-CROSS CONJUGATE OF X_1."""

        from __future__ import annotations

        from pathlib import Path

        import sympy.geometry as spg
        from geometor.model import Model

        from geometor.etc.ops import (
            central_line,
            construct_baseline_triangle,
            create_model,
            eval_trilinear_point,
            incenter_of,
            mittenpunkt_of,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_01018(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_1018 = X_512-CROSS CONJUGATE OF X_1 on reference triangle ABC."""
            X_1018 = eval_trilinear_point(model, A, B, C, '((b + c)/(b - c))', ID="X_1018", classes=["selected", "target"])
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_39 = eval_trilinear_point(model, A, B, C, 'a*(b**(2) + c**(2))', ID="X_39", classes=["center", "incident"])
            central_line(model, X_1, X_39, 1, 39, incident=True)
            X_9 = mittenpunkt_of(model, A, B, C, ID="X_9", classes=["center", "incident"])
            X_80 = eval_trilinear_point(model, A, B, C, '1/(1 - 2*cos(A))', ID="X_80", classes=["center", "incident"])
            central_line(model, X_9, X_80, 9, 80, incident=True)
            X_100 = eval_trilinear_point(model, A, B, C, '1/(b - c)', ID="X_100", classes=["center", "incident"])
            X_101 = eval_trilinear_point(model, A, B, C, 'a/(b - c)', ID="X_101", classes=["center", "incident"])
            central_line(model, X_100, X_101, 100, 101, incident=True)
            return promote_point_to_top(model, X_1018)


        def build_model(
            sides: tuple[float, float, float] = (5.0, 6.0, 7.0),
            show_guides: bool = False,
        ) -> Model:
            """Build a `geometor.model.Model` for X_1018 on the given reference triangle."""
            model = create_model('X_1018 = X_512-CROSS CONJUGATE OF X_1')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_01018(model, A, B, C)
            return model


        if __name__ == "__main__":
            here = Path(__file__).resolve().parent
            model_acute = build_model((5.0, 6.0, 7.0))
            model_acute.save(str(here / "x-01018.json"))
            write_center_svg(
                model_acute,
                here / "x-01018.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )