X323

ISOTOMIC CONJUGATE OF X94

< 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, 110 }: Central Line L(23, 110) { 2, 6 }: Centroid–Symmedian Line { 20, 155 }: Central Line L(20, 155) { 30, 146 }: Central Line L(30, 146) { 140, 195 }: Central Line L(140, 195) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_23 = FAR-OUT POINT (1.3871, 2.4232) X_110 = FOCUS OF KIEPERT PARABOLA (0.2516, 0.5478) X_2 = CENTROID (0.5374, 0.2000) X_6 = SYMMEDIAN POINT (LEMOINE POINT, GREBE POINT) (0.6000, 0.2672) X_20 = DE LONGCHAMPS POINT (0.3878, -0.1916) X_155 = EIGENCENTER OF ORTHIC TRIANGLE (1.1658, 0.5033) X_30 = EULER INFINITY POINT (0.7469, 0.7481) X_146 = REFLECTION OF X(20) IN X(110) (0.1155, 1.2873) X_140 = MIDPOINT OF X(3) AND X(5) (0.5281, 0.1755) X_195 = -CEVA CONJUGATE OF X(3) (0.6761, 0.3331) X_323 = ISOTOMIC CONJUGATE OF X(94) (-0.8839, -1.3275) A B C X23 X110 X2 X6 X20 X155 X30 X146 X140 X195 X323 (a, b, c) = (5, 6, 7) | AB = 1

X323 (ISOTOMIC CONJUGATE OF X94) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_323 = ISOTOMIC CONJUGATE OF X_94."""

        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,
            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_00323(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_323 = ISOTOMIC CONJUGATE OF X_94 on reference triangle ABC."""
            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"])
            X_110 = eval_trilinear_point(model, A, B, C, 'csc(B - C)', ID="X_110", classes=["center"])
            X_323 = reflection_in_point(model, X_23, X_110, ID="X_323", classes=["selected", "target"], guide=False)
            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)
            central_line(model, X_23, X_110, 23, 110, incident=True)
            X_20 = eval_trilinear_point(model, A, B, C, 'cos(A) - cos(B)*cos(C)', ID="X_20", classes=["center", "incident"])
            X_155 = eval_trilinear_point(model, A, B, C, '(cos(A))*((cos(B))**(2) + (cos(C))**(2) - (cos(A))**(2))', ID="X_155", classes=["center", "incident"])
            central_line(model, X_20, X_155, 20, 155, incident=True)
            return promote_point_to_top(model, X_323)


        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_323 on the given reference triangle."""
            model = create_model('X_323 = ISOTOMIC CONJUGATE OF X_94')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_00323(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-00323.json"))
            write_center_svg(
                model_acute,
                here / "x-00323.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )