X2913

ORTHIC-ISOGONAL CONJUGATE OF X62

X2913 is the orthic-isogonal conjugate of X62.
< 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) { 5, 15 }: Central Line L(5, 15) { 62, 143 }: Central Line L(62, 143) { 61, 184 }: Central Line L(61, 184) { 18, 2005 }: Central Line L(18, 2005) { 52, 2902 }: Central Line L(52, 2902) { 571, 2912 }: Central Line L(571, 2912) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_4 = ORTHOCENTER (0.6122, 0.3958) X_62 = ISOGONAL CONJUGATE OF X(18) (0.6446, 0.3409) X_5 = NINE-POINT CENTER (0.5561, 0.2489) X_15 = 1st ISODYNAMIC POINT (0.5519, 0.1878) X_143 = NINE-POINT CENTER OF ORTHIC TRIANGLE (0.6358, 0.3534) X_61 = ISOGONAL CONJUGATE OF X(17) (0.5764, 0.2283) X_184 = INVERSE OF X(125) IN THE BROCARD CIRCLE (0.5788, 0.1496) X_18 = 2nd NAPOLEON POINT (0.4434, 0.1317) X_2005 = ORTHOCORRESPONDENT OF X(62) (0.4874, 0.2417) X_52 = ORTHOCENTER OF ORTHIC TRIANGLE (0.7155, 0.4580) X_2902 = ORTHIC-ISOGONAL CONJUGATE OF X(15) (0.7604, 0.4612) X_571 = ORTHOHARMONIC OF X(52) (0.7141, 0.4556) X_2912 = ORTHIC-ISOGONAL CONJUGATE OF X(61) (0.6835, 0.4539) X_2913 = ORTHIC-ISOGONAL CONJUGATE OF X(62) (0.5697, 0.4474) A B C X4 X62 X5 X15 X143 X61 X184 X18 X2005 X52 X2902 X571 X2912 X2913 (a, b, c) = (5, 6, 7) | AB = 1

X2913 (ORTHIC-ISOGONAL CONJUGATE OF X62) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_2913 = ORTHIC-ISOGONAL CONJUGATE OF X_62."""

        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,
            ceva_conjugate,
            construct_baseline_triangle,
            create_model,
            eval_trilinear_point,
            nine_point_center_of,
            orthocenter_of,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_02913(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_2913 = ORTHIC-ISOGONAL CONJUGATE OF X_62 on reference triangle ABC."""
            X_4 = orthocenter_of(model, A, B, C, ID="X_4", classes=["center"])
            X_62 = eval_trilinear_point(model, A, B, C, 'sin(A -  pi  /6)', ID="X_62", classes=["center"])
            X_2913 = ceva_conjugate(model, A, B, C, X_4, X_62, ID="X_2913", classes=["selected", "target"])
            X_5 = nine_point_center_of(model, A, B, C, ID="X_5", classes=["center", "incident"])
            X_15 = eval_trilinear_point(model, A, B, C, 'sin(A +  pi  /3)', ID="X_15", classes=["center", "incident"])
            central_line(model, X_5, X_15, 5, 15, incident=True)
            X_143 = eval_trilinear_point(model, A, B, C, '(sec(A))*(cos(2*C - 2*A) + cos(2*A - 2*B))', ID="X_143", classes=["center", "incident"])
            central_line(model, X_62, X_143, 62, 143, incident=True)
            X_61 = eval_trilinear_point(model, A, B, C, 'sin(A +  pi  /6)', ID="X_61", 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_61, X_184, 61, 184, incident=True)
            return promote_point_to_top(model, X_2913)


        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_2913 on the given reference triangle."""
            model = create_model('X_2913 = ORTHIC-ISOGONAL CONJUGATE OF X_62')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_02913(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-02913.json"))
            write_center_svg(
                model_acute,
                here / "x-02913.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )