X217

X6-CEVA CONJUGATE OF X51

< 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) { 4, 6 }: Van Aubel Line { 54, 112 }: Central Line L(54, 112) { 32, 184 }: Central Line L(32, 184) { 39, 185 }: Central Line L(39, 185) { 83, 287 }: Central Line L(83, 287) { 232, 389 }: Central Line L(232, 389) 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_51 = CENTROID OF ORTHIC TRIANGLE (0.6093, 0.3186) X_4 = ORTHOCENTER (0.6122, 0.3958) X_54 = KOSNITA POINT (0.5880, 0.2176) X_112 = Ψ(ORTHOCENTER, SYMMEDIAN POINT) (0.5162, 0.6121) X_32 = 3rd POWER POINT (0.6400, 0.3332) X_184 = INVERSE OF X(125) IN THE BROCARD CIRCLE (0.5788, 0.1496) X_39 = BROCARD MIDPOINT (0.5778, 0.2305) X_185 = NAGEL POINT OF THE ORTHIC TRIANGLE (0.6033, 0.1643) X_83 = CEVAPOINT OF CENTROID AND SYMMEDIAN POINT (0.5651, 0.2360) X_287 = -HIRST INVERSE OF X(98) (0.7437, -0.0511) X_232 = -CEVA CONJUGATE OF X(132) (0.6919, 0.7779) X_389 = CENTER OF THE TAYLOR CIRCLE (0.6078, 0.2800) X_217 = -CEVA CONJUGATE OF X(51) (0.5928, 0.1915) A B C X6 X51 X4 X54 X112 X32 X184 X39 X185 X83 X287 X232 X389 X217 (a, b, c) = (5, 6, 7) | AB = 1

X217 (X6-CEVA CONJUGATE OF X51) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_217 = X_6-CEVA CONJUGATE OF X_51."""

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


        def construct_x_00217(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_217 = X_6-CEVA CONJUGATE OF X_51 on reference triangle ABC."""
            X_217 = eval_trilinear_point(model, A, B, C, '((sin(A))**(3))*cos(A)*cos(B - C)', ID="X_217", classes=["selected", "target"])
            X_4 = orthocenter_of(model, A, B, C, ID="X_4", classes=["center", "incident"])
            X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center", "incident"])
            central_line(model, X_4, X_6, 4, 6, incident=True)
            X_54 = eval_trilinear_point(model, A, B, C, 'sec(B - C)', ID="X_54", classes=["center", "incident"])
            X_112 = eval_trilinear_point(model, A, B, C, 'a/(sin(2*B) - sin(2*C))', ID="X_112", classes=["center", "incident"])
            central_line(model, X_54, X_112, 54, 112, incident=True)
            X_32 = eval_trilinear_point(model, A, B, C, 'a**(3)', ID="X_32", classes=["center", "incident"])
            X_184 = eval_trilinear_point(model, A, B, C, 'a**(2)*cos(A)', ID="X_184", classes=["center", "incident"])
            central_line(model, X_32, X_184, 32, 184, incident=True)
            return promote_point_to_top(model, X_217)


        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_217 on the given reference triangle."""
            model = create_model('X_217 = X_6-CEVA CONJUGATE OF X_51')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_00217(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-00217.json"))
            write_center_svg(
                model_acute,
                here / "x-00217.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )