X67

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) { 69, 3448 }: Central Line L(69, 3448) { 6, 125 }: Central Line L(6, 125) { 110, 141 }: Central Line L(110, 141) { 50, 248 }: Central Line L(50, 248) { 4, 338 }: Central Line L(4, 338) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_69 = SYMMEDIAN POINT OF THE ANTICOMPLEMENTARY TRIANGLE (0.4122, 0.0654) X_3448 = ISOGONAL CONJUGATE OF X(3447) (1.1090, -0.4958) X_6 = SYMMEDIAN POINT (LEMOINE POINT, GREBE POINT) (0.6000, 0.2672) X_125 = CENTER OF JERABEK HYPERBOLA (0.6803, 0.0260) X_110 = FOCUS OF KIEPERT PARABOLA (0.2516, 0.5478) X_141 = COMPLEMENT OF SYMMEDIAN POINT (0.5061, 0.1663) X_50 = -CEVA CONJUGATE OF X(184) (2.1559, 2.8368) X_248 = -LINE CONJUGATE OF X(132) (0.8229, -0.0790) X_4 = ORTHOCENTER (0.6122, 0.3958) X_338 = CEVAPOINT OF X(115) AND X(125) (0.6941, 0.0587) X_67 = ISOGONAL CONJUGATE OF X(23) (0.7606, -0.2152) A B C X69 X3448 X6 X125 X110 X141 X50 X248 X4 X338 X67 (a, b, c) = (5, 6, 7) | AB = 1

X67 (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_67 = 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,
            construct_baseline_triangle,
            create_model,
            eval_trilinear_point,
            promote_point_to_top,
            symmedian_point_of,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_00067(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_67 = ISOGONAL CONJUGATE OF X_23 on reference triangle ABC."""
            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=["selected", "target"])
            X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center", "incident"])
            X_125 = eval_trilinear_point(model, A, B, C, 'cos(A)*(sin(B - C))**(2)', ID="X_125", classes=["center", "incident"])
            central_line(model, X_6, X_125, 6, 125, incident=True)
            X_110 = eval_trilinear_point(model, A, B, C, 'csc(B - C)', ID="X_110", classes=["center", "incident"])
            X_141 = eval_trilinear_point(model, A, B, C, 'b*c*(b**(2) + c**(2))', ID="X_141", classes=["center", "incident"])
            central_line(model, X_110, X_141, 110, 141, incident=True)
            X_50 = eval_trilinear_point(model, A, B, C, 'sin(3*A)', ID="X_50", classes=["center", "incident"])
            X_248 = eval_trilinear_point(model, A, B, C, 'sin(2*A)*sec(A +  omega  )', ID="X_248", classes=["center", "incident"])
            central_line(model, X_50, X_248, 50, 248, incident=True)
            return promote_point_to_top(model, X_67)


        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_67 on the given reference triangle."""
            model = create_model('X_67 = ISOGONAL CONJUGATE OF X_23')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_00067(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-00067.json"))
            write_center_svg(
                model_acute,
                here / "x-00067.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )