X2684

RS(X99, X101)

X2684 = reflection of X2681 in X118
< A B C >: Reference Triangle △ABC [ A B ]: Sideline AB (Base c = 1) [ B C ]: Sideline BC (Side a) [ C A ]: Sideline CA (Side b) { 2681, 118 }: Central Line L(2681, 118) { 114, 325 }: Central Line L(114, 325) { 118, 516 }: Central Line L(118, 516) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_2681 = RS(X(98), X(101)) (0.3543, 0.3238) X_118 = MIDPOINT OF X(4) AND X(101) (0.4133, 0.4603) X_114 = KIEPERT ANTIPODE (0.3616, 0.4140) X_325 = -HIRST INVERSE OF X(69) (-0.3370, -0.7398) X_516 = ISOGONAL CONJUGATE OF X(103) (0.7703, 0.7386) X_2684 = RS(X(99), X(101)) (0.4723, 0.5968) A B C X2681 X118 X114 X325 X516 X2684 (a, b, c) = (5, 6, 7) | AB = 1

X2684 (RS(X99, X101)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_2684 = RS(X_99, 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,
            point_from_barycentrics,
            promote_point_to_top,
            reflection_in_point,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_02684(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_2684 = RS(X_99, X_101) on reference triangle ABC."""
            X_2681 = point_from_barycentrics(model, A, B, C, 0.43640713, 0.023754536, 0.53983834, ID="X_2681", classes=["center"])
            X_118 = point_from_barycentrics(model, A, B, C, 0.28918651, -0.056547619, 0.76736111, ID="X_118", classes=["center"])
            X_2684 = reflection_in_point(model, X_2681, X_118, ID="X_2684", classes=["selected", "target"], guide=False)
            X_114 = eval_trilinear_point(model, A, B, C, 'b*c*(b*sec(B +  omega  ) + c*sec(C +  omega  ))', ID="X_114", classes=["center", "incident"])
            X_325 = eval_trilinear_point(model, A, B, C, '(csc(A))**(2)', ID="X_325", classes=["center", "incident"])
            central_line(model, X_114, X_325, 114, 325, incident=True)
            X_516 = eval_trilinear_point(model, A, B, C, 'b*c*((a - b)*cot(C) + (a - c)*cot(B))', ID="X_516", classes=["center", "incident"])
            central_line(model, X_118, X_516, 118, 516, incident=True)
            return promote_point_to_top(model, X_2684)


        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_2684 on the given reference triangle."""
            model = create_model('X_2684 = RS(X_99, X_101)')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_02684(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-02684.json"))
            write_center_svg(
                model_acute,
                here / "x-02684.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )