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X₃₂₂₇¶

SS(a → bc) OF X₁₀₆

X₃₂₂₇ = Steiner-circumellipse-X₁-antipode of X₁₉₀

X₃₂₂₇ (SS(a → bc) OF X₁₀₆) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_3227 = SS(a → bc) OF X_106."""

        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,
            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_03227(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3227 = SS(a → bc) OF X_106 on reference triangle ABC."""
            X_3227 = eval_trilinear_point(model, A, B, C, '(b*c/(2*b*c - a*b - a*c))', ID="X_3227", classes=["selected", "target"])
            X_81 = eval_trilinear_point(model, A, B, C, '1/(b + c)', ID="X_81", classes=["center", "incident"])
            X_99 = eval_trilinear_point(model, A, B, C, 'b*c/(b**(2) - c**(2))', ID="X_99", classes=["center", "incident"])
            central_line(model, X_81, X_99, 81, 99, incident=True)
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_190 = eval_trilinear_point(model, A, B, C, 'b*c/(b - c)', ID="X_190", classes=["center", "incident"])
            central_line(model, X_1, X_190, 1, 190, incident=True)
            X_88 = eval_trilinear_point(model, A, B, C, '1/(b + c - 2*a)', ID="X_88", classes=["center", "incident"])
            X_239 = eval_trilinear_point(model, A, B, C, 'b*c*(a**(2) - b*c)', ID="X_239", classes=["center", "incident"])
            central_line(model, X_88, X_239, 88, 239, incident=True)
            return promote_point_to_top(model, X_3227)


        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_3227 on the given reference triangle."""
            model = create_model('X_3227 = SS(a → bc) OF X_106')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03227(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-03227.json"))
            write_center_svg(
                model_acute,
                here / "x-03227.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X3227¶

X₃₂₂₇¶