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X₃₄₅₇¶

X₁₃-VERTEX CONJUGATE OF X₁₅

Let A' be the free vertex of the equilateral triangle constructed outwardly on BC, and define B' and C' cyclically. X₃₄₅₇ is the barycentric product A'*B'*C'. (Randy Hutson, July 31 2018)

X₃₄₅₇ (X₁₃-VERTEX CONJUGATE OF X₁₅) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_3457 = X_13-VERTEX CONJUGATE OF X_15."""

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


        def construct_x_03457(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3457 = X_13-VERTEX CONJUGATE OF X_15 on reference triangle ABC."""
            X_298 = eval_trilinear_point(model, A, B, C, '(csc(A))**(2)*sin(A +  pi  /3)', ID="X_298", classes=["center"])
            X_3457 = isogonal_conjugate(model, A, B, C, X_298, ID="X_3457", classes=["selected", "target"])
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
            X_13 = eval_trilinear_point(model, A, B, C, 'csc(A +  pi  /3)', ID="X_13", classes=["center", "incident"])
            central_line(model, X_2, X_13, 2, 13, incident=True)
            X_62 = eval_trilinear_point(model, A, B, C, 'sin(A -  pi  /6)', ID="X_62", classes=["center", "incident"])
            X_110 = eval_trilinear_point(model, A, B, C, 'csc(B - C)', ID="X_110", classes=["center", "incident"])
            central_line(model, X_62, X_110, 62, 110, incident=True)
            X_300 = eval_trilinear_point(model, A, B, C, '(csc(A))**(2)*csc(A +  pi  /3)', ID="X_300", classes=["center", "incident"])
            X_308 = eval_trilinear_point(model, A, B, C, 'b**(3)*c**(3)/(b**(2) + c**(2))', ID="X_308", classes=["center", "incident"])
            central_line(model, X_300, X_308, 300, 308, incident=True)
            return promote_point_to_top(model, X_3457)


        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_3457 on the given reference triangle."""
            model = create_model('X_3457 = X_13-VERTEX CONJUGATE OF X_15')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03457(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-03457.json"))
            write_center_svg(
                model_acute,
                here / "x-03457.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X3457¶

X₃₄₅₇¶