X2448

1st INTERSECTION(LINE X1X_3, BEVAN CIRCLE)

Of the two points of intersection, X2448 is the closer to X1..
< 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) { 1, 3 }: OI Line (Incenter–Circumcenter Line) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_1 = INCENTER (0.5714, 0.2333) X_3 = CIRCUMCENTER (0.5000, 0.1021) X_2448 = 1st INTERSECTION(LINE X(1)X(3), BEVAN CIRCLE) (0.9165, 0.8673) A B C X1 X3 X2448 (a, b, c) = (5, 6, 7) | AB = 1

X2448 (1st INTERSECTION(LINE X1X_3, BEVAN CIRCLE)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_2448 = 1st INTERSECTION(LINE X_1X_3, BEVAN 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,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_02448(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_2448 = 1st INTERSECTION(LINE X_1X_3, BEVAN CIRCLE) on reference triangle ABC."""
            X_2448 = eval_trilinear_point(model, A, B, C, '(((3 - 2*cos(A) - 2*cos(B) - 2*cos(C))**(1/2))*cos(A) - (((3 - 2*cos(A) - 2*cos(B) - 2*cos(C))**(1/2)) - 2)*(cos(B) + cos(C) - 1))', ID="X_2448", 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)
            return promote_point_to_top(model, X_2448)


        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_2448 on the given reference triangle."""
            model = create_model('X_2448 = 1st INTERSECTION(LINE X_1X_3, BEVAN CIRCLE)')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_02448(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-02448.json"))
            write_center_svg(
                model_acute,
                here / "x-02448.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )