X2118

POINT KEPLER VII

< 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, 365 }: Central Line L(6, 365) { 238, 2119 }: Central Line L(238, 2119) { 2108, 2147 }: Central Line L(2108, 2147) { 2111, 2146 }: Central Line L(2111, 2146) 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_365 = SQUARE ROOT POINT (0.5864, 0.2502) X_238 = -LINE CONJUGATE OF X(37) (1.6190, 1.4775) X_2119 = -ISOCONJUGATE OF X(2118) (1.0031, 0.0103) X_2108 = POINT KEPLER I (-0.3883, 0.6500) X_2147 = -ISOCONJUGATE OF X(2146) (-0.1236, 0.7736) X_2111 = -ISOCONJUGATE OF X(2110) (-0.1997, 0.7497) X_2146 = -CEVA CONJUGATE OF X(365) (-0.3206, 0.6940) X_2118 = POINT KEPLER VII (1.6762, 1.6136) A B C X6 X365 X238 X2119 X2108 X2147 X2111 X2146 X2118 (a, b, c) = (5, 6, 7) | AB = 1

X2118 (POINT KEPLER VII) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_2118 = POINT KEPLER VII."""

        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,
            point_from_barycentrics,
            promote_point_to_top,
            symmedian_point_of,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_02118(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_2118 = POINT KEPLER VII on reference triangle ABC."""
            X_2118 = eval_trilinear_point(model, A, B, C, '(a*(a + b + c)*(b*c)**(1/2) + (b*c + c*a + a*b)*(a - (a*b)**(1/2) - (a*c)**(1/2)))', ID="X_2118", classes=["selected", "target"])
            X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center", "incident"])
            X_365 = eval_trilinear_point(model, A, B, C, 'a**(1/2)', ID="X_365", classes=["center", "incident"])
            central_line(model, X_6, X_365, 6, 365, incident=True)
            X_238 = eval_trilinear_point(model, A, B, C, 'a**(2) - b*c', ID="X_238", classes=["center", "incident"])
            X_2119 = eval_trilinear_point(model, A, B, C, '(a**(1/2)/((a + b + c)*(a*b*c)**(1/2) + (b*c + c*a + a*b)*(a**(1/2) - b**(1/2) - c**(1/2))))', ID="X_2119", classes=["center", "incident"])
            central_line(model, X_238, X_2119, 238, 2119, incident=True)
            X_2108 = eval_trilinear_point(model, A, B, C, '((b + c)*a**(3) - (b**(2) - b*c + c**(2))*a**(2) - (b + c)*(b**(2) + c**(2))*a + b*c*(b**(2) + b*c + c**(2)))', ID="X_2108", classes=["center", "incident"])
            X_2147 = point_from_barycentrics(model, A, B, C, 0.6235198, -0.91312312, 1.2896033, ID="X_2147", classes=["center", "incident"])
            central_line(model, X_2108, X_2147, 2108, 2147, incident=True)
            return promote_point_to_top(model, X_2118)


        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_2118 on the given reference triangle."""
            model = create_model('X_2118 = POINT KEPLER VII')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_02118(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-02118.json"))
            write_center_svg(
                model_acute,
                here / "x-02118.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )