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X₂₁₇₂¶

X₂-ISOCONJUGATE OF X₆₆

X₂₁₇₂ = isogonal conjugate of isotomic conjugate of X₁₇₆₀

X₂₁₇₂ (X₂-ISOCONJUGATE OF X₆₆) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_2172 = X_2-ISOCONJUGATE OF X_66."""

        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,
            ceva_conjugate,
            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_02172(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_2172 = X_2-ISOCONJUGATE OF X_66 on reference triangle ABC."""
            X_75 = eval_trilinear_point(model, A, B, C, '1/a**(2)', ID="X_75", classes=["center"])
            X_31 = eval_trilinear_point(model, A, B, C, 'a**(2)', ID="X_31", classes=["center"])
            X_2172 = ceva_conjugate(model, A, B, C, X_75, X_31, ID="X_2172", classes=["selected", "target"])
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_19 = eval_trilinear_point(model, A, B, C, 'tan(A)', ID="X_19", classes=["center", "incident"])
            central_line(model, X_1, X_19, 1, 19, incident=True)
            X_78 = eval_trilinear_point(model, A, B, C, '1/(1 - sec(A))', ID="X_78", classes=["center", "incident"])
            X_101 = eval_trilinear_point(model, A, B, C, 'a/(b - c)', ID="X_101", classes=["center", "incident"])
            central_line(model, X_78, X_101, 78, 101, incident=True)
            X_163 = eval_trilinear_point(model, A, B, C, '(sin(2*A))/(sin(2*B) - sin(2*C))', ID="X_163", classes=["center", "incident"])
            X_255 = eval_trilinear_point(model, A, B, C, '(cos(A))**(2)', ID="X_255", classes=["center", "incident"])
            central_line(model, X_163, X_255, 163, 255, incident=True)
            return promote_point_to_top(model, X_2172)


        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_2172 on the given reference triangle."""
            model = create_model('X_2172 = X_2-ISOCONJUGATE OF X_66')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_02172(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-02172.json"))
            write_center_svg(
                model_acute,
                here / "x-02172.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X2172¶

X₂₁₇₂¶