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X₂₆₈₁¶

RS(X₉₈, X₁₀₁)

X₂₆₈₁ = reflection of X₂₆₈₄ in X₁₁₈

X₂₆₈₁ (RS(X₉₈, X₁₀₁)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_2681 = RS(X_98, X_101)."""

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


        def construct_x_02681(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_2681 = RS(X_98, X_101) on reference triangle ABC."""
            X_115 = eval_trilinear_point(model, A, B, C, 'b*c*(b**(2) - c**(2))**(2)', ID="X_115", classes=["center"])
            X_512 = eval_trilinear_point(model, A, B, C, 'a*(b**(2) - c**(2))', ID="X_512", classes=["center"])
            X_118 = point_from_barycentrics(model, A, B, C, 0.28918651, -0.056547619, 0.76736111, ID="X_118", classes=["center"])
            X_516 = eval_trilinear_point(model, A, B, C, 'b*c*((a - b)*cot(C) + (a - c)*cot(B))', ID="X_516", classes=["center"])
            central_line(model, X_115, X_512, 115, 512)
            central_line(model, X_118, X_516, 118, 516)
            X_2681 = intersect_lines(model, X_115, X_512, X_118, X_516, ID="X_2681", classes=["selected", "target"])
            return promote_point_to_top(model, X_2681)


        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_2681 on the given reference triangle."""
            model = create_model('X_2681 = RS(X_98, X_101)')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_02681(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-02681.json"))
            write_center_svg(
                model_acute,
                here / "x-02681.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X2681¶

X₂₆₈₁¶