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X₂₅₇₂¶

INSIMILICENTER(BEVAN, 2nd BROCARD CIRCLE)

X₂₅₇₂ is the insimilicenter(Bevan, 2nd Brocard circle).

X₂₅₇₂ (INSIMILICENTER(BEVAN, 2nd BROCARD CIRCLE)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_2572 = INSIMILICENTER(BEVAN, 2nd BROCARD CIRCLE)."""

        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,
            incenter_of,
            mittenpunkt_of,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_02572(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_2572 = INSIMILICENTER(BEVAN, 2nd BROCARD CIRCLE) on reference triangle ABC."""
            X_2572 = eval_trilinear_point(model, A, B, C, '(1 - cos(B) - cos(C) + (1 + 2/e)*cos(A))', ID="X_2572", classes=["selected", "target"])
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center", "incident"])
            central_line(model, X_1, X_3, 1, 3, incident=True)
            X_9 = mittenpunkt_of(model, A, B, C, ID="X_9", classes=["center", "incident"])
            X_2569 = eval_trilinear_point(model, A, B, C, '(b*c*((b + c)*e - a*cos(A)))', ID="X_2569", classes=["center", "incident"])
            central_line(model, X_9, X_2569, 9, 2569, incident=True)
            X_1342 = eval_trilinear_point(model, A, B, C, 'sin(A) + cos(A)*cot( omega  /2)', ID="X_1342", classes=["center", "incident"])
            X_1705 = eval_trilinear_point(model, A, B, C, '(2*cos(A -  omega  ) - e*(1 + cos(A) - cos(B) - cos(C)))', ID="X_1705", classes=["center", "incident"])
            central_line(model, X_1342, X_1705, 1342, 1705, incident=True)
            return promote_point_to_top(model, X_2572)


        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_2572 on the given reference triangle."""
            model = create_model('X_2572 = INSIMILICENTER(BEVAN, 2nd BROCARD CIRCLE)')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_02572(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-02572.json"))
            write_center_svg(
                model_acute,
                here / "x-02572.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X2572¶

X₂₅₇₂¶