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X₈₅₉¶

INTERCEPT OF EULER LINE AND TRILINEAR POLAR OF X₈₁

X₈₅₉ = midpoint of X₈₅₁ and X₈₅₅

X₈₅₉ (INTERCEPT OF EULER LINE AND TRILINEAR POLAR OF X₈₁) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_859 = INTERCEPT OF EULER LINE AND TRILINEAR POLAR OF X_81."""

        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,
            midpoint,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_00859(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_859 = INTERCEPT OF EULER LINE AND TRILINEAR POLAR OF X_81 on reference triangle ABC."""
            X_851 = eval_trilinear_point(model, A, B, C, 'sin(2*B)*sin(C - A) + sin(2*C)*sin(B - A)', ID="X_851", classes=["center"])
            X_855 = eval_trilinear_point(model, A, B, C, '(cot(C/2)*sin(2*B)*sin(C - A) + cot(B/2)*sin(2*C)*sin(B - A))', ID="X_855", classes=["center"])
            X_859 = midpoint(model, X_851, X_855, ID="X_859", classes=["selected", "target"], guide=False)
            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"])
            central_line(model, X_2, X_3, 2, 3)
            X_56 = eval_trilinear_point(model, A, B, C, 'a/(b + c - a)', ID="X_56", classes=["center", "incident"])
            X_58 = eval_trilinear_point(model, A, B, C, 'a/(b + c)', ID="X_58", classes=["center", "incident"])
            central_line(model, X_56, X_58, 56, 58, incident=True)
            X_36 = eval_trilinear_point(model, A, B, C, '1 - 2*cos(A)', ID="X_36", classes=["center", "incident"])
            X_238 = eval_trilinear_point(model, A, B, C, 'a**(2) - b*c', ID="X_238", classes=["center", "incident"])
            central_line(model, X_36, X_238, 36, 238, incident=True)
            return promote_point_to_top(model, X_859)


        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_859 on the given reference triangle."""
            model = create_model('X_859 = INTERCEPT OF EULER LINE AND TRILINEAR POLAR OF X_81')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_00859(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-00859.json"))
            write_center_svg(
                model_acute,
                here / "x-00859.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X859¶

X₈₅₉¶