X93

ISOGONAL CONJUGATE OF X49

< 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) { 49, 94 }: Central Line L(49, 94) { 186, 252 }: Central Line L(186, 252) { 4, 562 }: Central Line L(4, 562) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_49 = CENTER OF SINE-TRIPLE-ANGLE CIRCLE (0.6275, 0.1789) X_94 = ISOGONAL CONJUGATE OF X(50) (0.9069, -0.1331) X_186 = INVERSE-IN-CIRCUMCIRCLE OF X(4) (0.7957, 0.8758) X_252 = ISOGONAL CONJUGATE OF X(143) (0.4565, 0.1253) X_4 = ORTHOCENTER (0.6122, 0.3958) X_562 = TRILINEAR QUOTIENT X(2)*X(50)/X(49) (3.1429, 3.7154) X_93 = ISOGONAL CONJUGATE OF X(49) (0.5299, 0.2878) A B C X49 X94 X186 X252 X4 X562 X93 (a, b, c) = (5, 6, 7) | AB = 1

X93 (ISOGONAL CONJUGATE OF X49) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_93 = ISOGONAL CONJUGATE OF X_49."""

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


        def construct_x_00093(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_93 = ISOGONAL CONJUGATE OF X_49 on reference triangle ABC."""
            X_49 = eval_trilinear_point(model, A, B, C, 'cos(3*A)', ID="X_49", classes=["center"])
            X_93 = isogonal_conjugate(model, A, B, C, X_49, ID="X_93", classes=["selected", "target"])
            X_94 = eval_trilinear_point(model, A, B, C, 'csc(3*A)', ID="X_94", classes=["center", "incident"])
            central_line(model, X_49, X_94, 49, 94, incident=True)
            X_186 = eval_trilinear_point(model, A, B, C, '4*cos(A) - sec(A)', ID="X_186", classes=["center", "incident"])
            X_252 = eval_trilinear_point(model, A, B, C, '(sec(B - C)/(1 - 2*cos(2*A)))', ID="X_252", classes=["center", "incident"])
            central_line(model, X_186, X_252, 186, 252, incident=True)
            X_4 = orthocenter_of(model, A, B, C, ID="X_4", classes=["center", "incident"])
            X_562 = eval_trilinear_point(model, A, B, C, 'csc(A)*tan(3*A)', ID="X_562", classes=["center", "incident"])
            central_line(model, X_4, X_562, 4, 562, incident=True)
            return promote_point_to_top(model, X_93)


        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_93 on the given reference triangle."""
            model = create_model('X_93 = ISOGONAL CONJUGATE OF X_49')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_00093(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-00093.json"))
            write_center_svg(
                model_acute,
                here / "x-00093.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )