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X₁₈₈₉¶

ZOSMA TRANSFORM OF X₉₆₈

X₁₈₈₉ = inverse-in-orthocentroidal-circle of X₄₃₀

X₁₈₈₉ (ZOSMA TRANSFORM OF X₉₆₈) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_1889 = ZOSMA TRANSFORM OF X_968."""

        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,
            circumcenter_of,
            construct_baseline_triangle,
            create_model,
            eval_trilinear_point,
            intersect_lines,
            promote_point_to_top,
            symmedian_point_of,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_01889(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_1889 = ZOSMA TRANSFORM OF X_968 on reference triangle ABC."""
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center"])
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center"])
            X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center"])
            X_1836 = eval_trilinear_point(model, A, B, C, 'cos(B) + cos(C) + 2*cos(B)*cos(C)', ID="X_1836", classes=["center"])
            central_line(model, X_2, X_3, 2, 3)
            central_line(model, X_6, X_1836, 6, 1836)
            X_1889 = intersect_lines(model, X_2, X_3, X_6, X_1836, ID="X_1889", classes=["selected", "target"])
            X_518 = eval_trilinear_point(model, A, B, C, '(a*b + a*c - b**(2) - c**(2))', ID="X_518", classes=["center", "incident"])
            X_1824 = eval_trilinear_point(model, A, B, C, '(b + c)*tan(A)', ID="X_1824", classes=["center", "incident"])
            central_line(model, X_518, X_1824, 518, 1824, incident=True)
            return promote_point_to_top(model, X_1889)


        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_1889 on the given reference triangle."""
            model = create_model('X_1889 = ZOSMA TRANSFORM OF X_968')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_01889(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-01889.json"))
            write_center_svg(
                model_acute,
                here / "x-01889.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X1889¶

X₁₈₈₉¶