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X₃₂₄₉¶

SS(a → bc) OF X₇₆₄

X₃₂₄₉ = crossdifference of every pair of points on the line X₃₅₀ X₈₉₉

X₃₂₄₉ (SS(a → bc) OF X₇₆₄) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_3249 = SS(a → bc) OF X_764."""

        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_03249(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3249 = SS(a → bc) OF X_764 on reference triangle ABC."""
            X_3249 = eval_trilinear_point(model, A, B, C, '((a*b - a*c)**(3))', ID="X_3249", classes=["selected", "target"])
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_649 = eval_trilinear_point(model, A, B, C, 'a*(b - c)', ID="X_649", classes=["center", "incident"])
            central_line(model, X_1, X_649, 1, 649, incident=True)
            X_330 = eval_trilinear_point(model, A, B, C, 'b*c/(a*b + a*c - b*c)', ID="X_330", classes=["center", "incident"])
            X_514 = eval_trilinear_point(model, A, B, C, '(b - c)/a', ID="X_514", classes=["center", "incident"])
            central_line(model, X_330, X_514, 330, 514, incident=True)
            X_213 = eval_trilinear_point(model, A, B, C, '(b + c)*a**(2)', ID="X_213", classes=["center", "incident"])
            X_667 = eval_trilinear_point(model, A, B, C, 'a**(2)*(b - c)', ID="X_667", classes=["center", "incident"])
            central_line(model, X_213, X_667, 213, 667, incident=True)
            return promote_point_to_top(model, X_3249)


        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_3249 on the given reference triangle."""
            model = create_model('X_3249 = SS(a → bc) OF X_764')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03249(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-03249.json"))
            write_center_svg(
                model_acute,
                here / "x-03249.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X3249¶

X₃₂₄₉¶