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X₃₃₀₉¶

ISOGONAL CONJUGATE OF X₁₂₉₂

As the isogonal conjugate of a point on the circumcircle, X₃₃₀₉ lies on the line at infinity.

X₃₃₀₉ (ISOGONAL CONJUGATE OF X₁₂₉₂) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_3309 = ISOGONAL CONJUGATE OF X_1292."""

        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,
            circumcenter_of,
            construct_baseline_triangle,
            create_model,
            eval_barycentric_point,
            eval_trilinear_point,
            isogonal_conjugate,
            orthocenter_of,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_03309(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3309 = ISOGONAL CONJUGATE OF X_1292 on reference triangle ABC."""
            X_1292 = eval_trilinear_point(model, A, B, C, '1/((b - c)*(a**(2) + b**(2) + c**(2) - 2*a*b - 2*a*c))', ID="X_1292", classes=["center"])
            X_3309 = isogonal_conjugate(model, A, B, C, X_1292, ID="X_3309", classes=["selected", "target"])
            X_30 = eval_trilinear_point(model, A, B, C, 'cos(A) - 2*cos(B)*cos(C)', ID="X_30", classes=["center", "incident"])
            X_511 = eval_trilinear_point(model, A, B, C, 'cos(A +  omega  )', ID="X_511", classes=["center", "incident"])
            central_line(model, X_30, X_511, 30, 511, incident=True)
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", 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_3, X_667, 3, 667, incident=True)
            X_4 = orthocenter_of(model, A, B, C, ID="X_4", classes=["center", "incident"])
            X_885 = eval_barycentric_point(model, A, B, C, '(b - c)*(a - b - c)/(b**(2) + c**(2) - a*b - a*c)', ID="X_885", classes=["center", "incident"])
            central_line(model, X_4, X_885, 4, 885, incident=True)
            return promote_point_to_top(model, X_3309)


        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_3309 on the given reference triangle."""
            model = create_model('X_3309 = ISOGONAL CONJUGATE OF X_1292')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03309(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-03309.json"))
            write_center_svg(
                model_acute,
                here / "x-03309.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X3309¶

X₃₃₀₉¶