X3231

ISOGONAL CONJUGATE OF X3228

< 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) { 3124, 3291 }: Central Line L(3124, 3291) { 2, 6 }: Centroid–Symmedian Line { 187, 237 }: Central Line L(187, 237) { 111, 694 }: Central Line L(111, 694) { 110, 1691 }: Central Line L(110, 1691) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_3124 = DANNEELS PERSPECTOR FOR X(76) (0.7888, 0.1151) X_3291 = INTERSECTION OF LINES X(2)X(39) AND X(230)X(231) (1.0965, 0.6233) X_2 = CENTROID (0.5374, 0.2000) X_6 = SYMMEDIAN POINT (LEMOINE POINT, GREBE POINT) (0.6000, 0.2672) X_187 = INVERSE-IN-CIRCUMCIRCLE OF X(6) (SCHOUTE CENTER) (1.1986, 1.2559) X_237 = -LINE CONJUGATE OF X(2) (0.9894, 1.3825) X_111 = PARRY POINT (0.9885, -0.0457) X_694 = ISOGONAL CONJUGATE OF X(385) (1.0179, 0.0378) X_110 = FOCUS OF KIEPERT PARABOLA (0.2516, 0.5478) X_1691 = RADICAL TRACE OF CIRCUMCIRCLE AND 1st LEMOINE CIRCLE (0.9991, 0.9263) X_3231 = ISOGONAL CONJUGATE OF X(3228) (1.4041, 1.1314) A B C X3124 X3291 X2 X6 X187 X237 X111 X694 X110 X1691 X3231 (a, b, c) = (5, 6, 7) | AB = 1

X3231 (ISOGONAL CONJUGATE OF X3228) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_3231 = ISOGONAL CONJUGATE OF X_3228."""

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


        def construct_x_03231(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3231 = ISOGONAL CONJUGATE OF X_3228 on reference triangle ABC."""
            X_3231 = eval_trilinear_point(model, A, B, C, '(a*(2*b**(2)*c**(2) - a**(2)*b**(2) - a**(2)*c**(2)))', ID="X_3231", classes=["selected", "target"])
            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)
            X_187 = eval_trilinear_point(model, A, B, C, 'a*(2*a**(2) - b**(2) - c**(2))', ID="X_187", classes=["center", "incident"])
            X_237 = eval_trilinear_point(model, A, B, C, 'a**(2)*cos(A +  omega  )', ID="X_237", classes=["center", "incident"])
            central_line(model, X_187, X_237, 187, 237, incident=True)
            X_111 = eval_trilinear_point(model, A, B, C, 'a/(2*a**(2) - b**(2) - c**(2))', ID="X_111", classes=["center", "incident"])
            X_694 = eval_trilinear_point(model, A, B, C, 'a/(a**(4) - b**(2)*c**(2))', ID="X_694", classes=["center", "incident"])
            central_line(model, X_111, X_694, 111, 694, incident=True)
            return promote_point_to_top(model, X_3231)


        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_3231 on the given reference triangle."""
            model = create_model('X_3231 = ISOGONAL CONJUGATE OF X_3228')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03231(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-03231.json"))
            write_center_svg(
                model_acute,
                here / "x-03231.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )