X3365

SIN(A - 5π/12) POINT

< 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) { 3, 6 }: Brocard Axis { 14, 486 }: Central Line L(14, 486) { 17, 485 }: Central Line L(17, 485) { 18, 615 }: Central Line L(18, 615) { 203, 1335 }: Central Line L(203, 1335) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_3367 = CSC(A - 5π/12) POINT (0.5942, 0.8035) X_3 = CIRCUMCENTER (0.5000, 0.1021) X_6 = SYMMEDIAN POINT (LEMOINE POINT, GREBE POINT) (0.6000, 0.2672) X_14 = 2nd ISOGONIC CENTER (0.9134, -0.1143) X_486 = INNER VECTEN POINT (-0.0810, -0.0170) X_17 = 1st NAPOLEON POINT (0.5666, 0.2383) X_485 = VECTEN POINT (0.5773, 0.2578) X_18 = 2nd NAPOLEON POINT (0.4434, 0.1317) X_615 = ISOGONAL CONJUGATE OF X(589) (0.4337, 0.0885) X_203 = -CEVA CONJUGATE OF X(16) (0.4136, 0.3918) X_1335 = {X(1),X(6)}-HARMONIC CONJUGATE OF X(1124) (0.4024, 0.0326) X_3365 = SIN(A - 5π/12) POINT (0.3995, -0.0640) A B C X3367 X3 X6 X14 X486 X17 X485 X18 X615 X203 X1335 X3365 (a, b, c) = (5, 6, 7) | AB = 1

X3365 (SIN(A - 5π/12) POINT) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_3365 = SIN(A - 5π/12) POINT."""

        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,
            circumcenter_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_03365(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3365 = SIN(A - 5π/12) POINT on reference triangle ABC."""
            X_3365 = eval_trilinear_point(model, A, B, C, 'sin(A - 5*pi  /12)', ID="X_3365", classes=["selected", "target"])
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center", "incident"])
            X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center", "incident"])
            central_line(model, X_3, X_6, 3, 6, incident=True)
            X_14 = eval_trilinear_point(model, A, B, C, 'csc(A -  pi  /3)', ID="X_14", classes=["center", "incident"])
            X_486 = eval_trilinear_point(model, A, B, C, 'sec(A +  pi  /4)', ID="X_486", classes=["center", "incident"])
            central_line(model, X_14, X_486, 14, 486, incident=True)
            X_17 = eval_trilinear_point(model, A, B, C, 'csc(A +  pi  /6)', ID="X_17", classes=["center", "incident"])
            X_485 = eval_trilinear_point(model, A, B, C, 'sec(A -  pi  /4)', ID="X_485", classes=["center", "incident"])
            central_line(model, X_17, X_485, 17, 485, incident=True)
            return promote_point_to_top(model, X_3365)


        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_3365 on the given reference triangle."""
            model = create_model('X_3365 = SIN(A - 5π/12) POINT')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03365(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-03365.json"))
            write_center_svg(
                model_acute,
                here / "x-03365.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )