X2930

TANGENTIAL-ISOGONAL CONJUGATE OF X23

X2930 is the tangential-isogonal conjugate of X23.
< 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) { 6, 110 }: Central Line L(6, 110) { 3, 67 }: Central Line L(3, 67) { 23, 524 }: Central Line L(23, 524) { 49, 575 }: Central Line L(49, 575) { 195, 576 }: Central Line L(195, 576) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_6 = SYMMEDIAN POINT (LEMOINE POINT, GREBE POINT) (0.6000, 0.2672) X_110 = FOCUS OF KIEPERT PARABOLA (0.2516, 0.5478) X_3 = CIRCUMCENTER (0.5000, 0.1021) X_67 = ISOGONAL CONJUGATE OF X(23) (0.7606, -0.2152) X_23 = FAR-OUT POINT (1.3871, 2.4232) X_524 = ISOGONAL CONJUGATE OF X(111) (0.1376, -0.2297) X_49 = CENTER OF SINE-TRIPLE-ANGLE CIRCLE (0.6275, 0.1789) X_575 = ORTHOGONAL OF X(187) (0.5750, 0.2259) X_195 = -CEVA CONJUGATE OF X(3) (0.6761, 0.3331) X_576 = ORTHOHARMONIC OF X(187) (0.6500, 0.3498) X_2930 = TANGENTIAL-ISOGONAL CONJUGATE OF X(23) (-0.0968, 0.8285) A B C X6 X110 X3 X67 X23 X524 X49 X575 X195 X576 X2930 (a, b, c) = (5, 6, 7) | AB = 1

X2930 (TANGENTIAL-ISOGONAL CONJUGATE OF X23) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_2930 = TANGENTIAL-ISOGONAL CONJUGATE OF X_23."""

        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,
            circumcenter_of,
            construct_baseline_triangle,
            create_model,
            eval_trilinear_point,
            promote_point_to_top,
            reflection_in_point,
            symmedian_point_of,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_02930(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_2930 = TANGENTIAL-ISOGONAL CONJUGATE OF X_23 on reference triangle ABC."""
            X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center"])
            X_110 = eval_trilinear_point(model, A, B, C, 'csc(B - C)', ID="X_110", classes=["center"])
            X_2930 = reflection_in_point(model, X_6, X_110, ID="X_2930", classes=["selected", "target"], guide=False)
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center", "incident"])
            X_67 = eval_trilinear_point(model, A, B, C, 'b*c/(b**(4) + c**(4) - a**(4) - b**(2)*c**(2))', ID="X_67", classes=["center", "incident"])
            central_line(model, X_3, X_67, 3, 67, incident=True)
            central_line(model, X_6, X_110, 6, 110, incident=True)
            X_23 = eval_trilinear_point(model, A, B, C, 'a*(b**(4) + c**(4) - a**(4) - b**(2)*c**(2))', ID="X_23", classes=["center", "incident"])
            X_524 = eval_trilinear_point(model, A, B, C, '(2*a**(2) - b**(2) - c**(2))/a', ID="X_524", classes=["center", "incident"])
            central_line(model, X_23, X_524, 23, 524, incident=True)
            return promote_point_to_top(model, X_2930)


        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_2930 on the given reference triangle."""
            model = create_model('X_2930 = TANGENTIAL-ISOGONAL CONJUGATE OF X_23')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_02930(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-02930.json"))
            write_center_svg(
                model_acute,
                here / "x-02930.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )