X523

ISOGONAL CONJUGATE OF X110

As the isogonal conjugate of a point on the circumcircle, X523 lies on the line at infinity.
< 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) { 23, 385 }: Central Line L(23, 385) { 230, 231 }: Central Line L(230, 231) { 30, 511 }: Central Line L(30, 511) { 74, 477 }: Central Line L(74, 477) { 110, 476 }: Central Line L(110, 476) { 59, 655 }: Central Line L(59, 655) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_110 = FOCUS OF KIEPERT PARABOLA (0.2516, 0.5478) X_23 = FAR-OUT POINT (1.3871, 2.4232) X_385 = -HIRST INVERSE OF X(6) (2.2863, 2.0795) X_230 = -CEVA CONJUGATE OF X(114) (0.9746, 0.6698) X_231 = -CEVA CONJUGATE OF X(128) (1.0375, 0.6458) X_30 = EULER INFINITY POINT (0.7469, 0.7481) X_511 = ISOGONAL CONJUGATE OF X(98) (0.2335, -0.3020) X_74 = ISOGONAL CONJUGATE OF EULER INFINITY POINT (0.7484, -0.3437) X_477 = TIXIER ANTIPODE (0.0176, -0.0644) X_476 = TIXIER POINT (0.9824, 0.2685) X_59 = ISOGONAL CONJUGATE OF X(11) (0.5333, 0.4355) X_655 = TRILINEAR POLE OF LINE X(1)X(5) (1.0449, 0.2400) X_523 = ISOGONAL CONJUGATE OF X(110) (1.0856, -0.0096) A B C X110 X23 X385 X230 X231 X30 X511 X74 X477 X476 X59 X655 X523 (a, b, c) = (5, 6, 7) | AB = 1

X523 (ISOGONAL CONJUGATE OF X110) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_523 = ISOGONAL CONJUGATE OF X_110."""

        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,
            isogonal_conjugate,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_00523(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_523 = ISOGONAL CONJUGATE OF X_110 on reference triangle ABC."""
            X_110 = eval_trilinear_point(model, A, B, C, 'csc(B - C)', ID="X_110", classes=["center"])
            X_523 = isogonal_conjugate(model, A, B, C, X_110, ID="X_523", classes=["selected", "target"])
            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_385 = eval_trilinear_point(model, A, B, C, 'b*c*(a**(4) - b**(2)*c**(2))', ID="X_385", classes=["center", "incident"])
            central_line(model, X_23, X_385, 23, 385, incident=True)
            X_230 = eval_trilinear_point(model, A, B, C, 'b*c*(a**(2)*(2*a**(2) - b**(2) - c**(2)) + (b**(2) - c**(2))**(2))', ID="X_230", classes=["center", "incident"])
            X_231 = eval_trilinear_point(model, A, B, C, '(cos(B))*(4*(sin(C))**(2) - 1)*(cos(A)*sin(B) - sin(A)*cos(B)) - (cos(C))*(4*(sin(B))**(2) - 1)*(cos(C)*sin(A) - sin(C)*cos(A))', ID="X_231", classes=["center", "incident"])
            central_line(model, X_230, X_231, 230, 231, incident=True)
            X_30 = eval_trilinear_point(model, A, B, C, 'cos(A) - 2*cos(B)*cos(C)', ID="X_30", classes=["center", "incident"])
            X_511 = eval_trilinear_point(model, A, B, C, 'cos(A +  omega  )', ID="X_511", classes=["center", "incident"])
            central_line(model, X_30, X_511, 30, 511, incident=True)
            return promote_point_to_top(model, X_523)


        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_523 on the given reference triangle."""
            model = create_model('X_523 = ISOGONAL CONJUGATE OF X_110')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_00523(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-00523.json"))
            write_center_svg(
                model_acute,
                here / "x-00523.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )