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X₃₄₀₄¶

TAN(A + ω) POINT

X₃₄₀₄ and related points occupy Bernard Gibert’s Table 38. See the note at X₃₃₆₄.

X₃₄₀₄ (TAN(A + ω) POINT) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_3404 = TAN(A + ω) POINT."""

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


        def construct_x_03404(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3404 = TAN(A + ω) POINT on reference triangle ABC."""
            X_3404 = eval_trilinear_point(model, A, B, C, '(tan(A +  omega  ))', ID="X_3404", classes=["selected", "target"])
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_163 = eval_trilinear_point(model, A, B, C, '(sin(2*A))/(sin(2*B) - sin(2*C))', ID="X_163", classes=["center", "incident"])
            central_line(model, X_1, X_163, 1, 163, incident=True)
            X_63 = eval_trilinear_point(model, A, B, C, 'cot(A)', ID="X_63", classes=["center", "incident"])
            X_561 = eval_trilinear_point(model, A, B, C, 'a **(- 4)', ID="X_561", classes=["center", "incident"])
            central_line(model, X_63, X_561, 63, 561, incident=True)
            X_2157 = point_from_barycentrics(model, A, B, C, 0.3595619, 1.1175611, -0.47712301, ID="X_2157", classes=["center", "incident"])
            X_2624 = eval_trilinear_point(model, A, B, C, 'cot(A - B) + cot(A - C)', ID="X_2624", classes=["center", "incident"])
            central_line(model, X_2157, X_2624, 2157, 2624, incident=True)
            return promote_point_to_top(model, X_3404)


        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_3404 on the given reference triangle."""
            model = create_model('X_3404 = TAN(A + ω) POINT')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03404(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-03404.json"))
            write_center_svg(
                model_acute,
                here / "x-03404.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X3404¶

X₃₄₀₄¶