X615

ISOGONAL CONJUGATE OF X589

< A B C >: Reference Triangle △ABC < M_a M_b M_c >: Medial Triangle △M_a M_b M_c [ A B ]: Sideline AB (Base c = 1) [ B C ]: Sideline BC (Side a) [ C A ]: Sideline CA (Side b) { 2, 491 }: Centroid–Symmedian Line { 2, 6 }: Centroid–Symmedian Line { 5, 372 }: Central Line L(5, 372) { 3, 486 }: Central Line L(3, 486) { 140, 371 }: Central Line L(140, 371) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) M_a = Midpoint M_a of BC (0.8061, 0.2999) M_b = Midpoint M_b of CA (0.3061, 0.2999) M_c = Midpoint M_c of AB (0.5000, 0.0000) X_2 = CENTROID (0.5374, 0.2000) X_491 = CEVAPOINT OF X(2) AND X(487) (0.7449, 0.4229) X_6 = SYMMEDIAN POINT (LEMOINE POINT, GREBE POINT) (0.6000, 0.2672) X_5 = NINE-POINT CENTER (0.5561, 0.2489) X_372 = {X(3),X(6)}-HARMONIC CONJUGATE OF X(371) (0.7148, 0.4568) X_3 = CIRCUMCENTER (0.5000, 0.1021) X_486 = INNER VECTEN POINT (-0.0810, -0.0170) X_140 = MIDPOINT OF X(3) AND X(5) (0.5281, 0.1755) X_371 = KENMOTU POINT (CONGRUENT SQUARES POINT) (0.5652, 0.2097) X_615 = ISOGONAL CONJUGATE OF X(589) (0.4337, 0.0885) A B C Ma Mb Mc X2 X491 X6 X5 X372 X3 X486 X140 X371 X615 (a, b, c) = (5, 6, 7) | AB = 1

X615 (ISOGONAL CONJUGATE OF X589) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_615 = ISOGONAL CONJUGATE OF X_589."""

        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,
            centroid_of,
            circumcenter_of,
            construct_baseline_triangle,
            create_model,
            eval_trilinear_point,
            isogonal_conjugate,
            nine_point_center_of,
            promote_point_to_top,
            symmedian_point_of,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_00615(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_615 = ISOGONAL CONJUGATE OF X_589 on reference triangle ABC."""
            X_589 = eval_trilinear_point(model, A, B, C, '(a/(a**(2) - 4*area ))', ID="X_589", classes=["center"])
            X_615 = isogonal_conjugate(model, A, B, C, X_589, ID="X_615", classes=["selected", "target"])
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
            X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center", "incident"])
            central_line(model, X_2, X_6, 2, 6, incident=True)
            X_5 = nine_point_center_of(model, A, B, C, ID="X_5", classes=["center", "incident"])
            X_372 = eval_trilinear_point(model, A, B, C, 'cos(A +  pi  /4)', ID="X_372", classes=["center", "incident"])
            central_line(model, X_5, X_372, 5, 372, incident=True)
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center", "incident"])
            X_486 = eval_trilinear_point(model, A, B, C, 'sec(A +  pi  /4)', ID="X_486", classes=["center", "incident"])
            central_line(model, X_3, X_486, 3, 486, incident=True)
            return promote_point_to_top(model, X_615)


        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_615 on the given reference triangle."""
            model = create_model('X_615 = ISOGONAL CONJUGATE OF X_589')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_00615(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-00615.json"))
            write_center_svg(
                model_acute,
                here / "x-00615.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )