X2549

EXSIMILICENTER(MOSES CIRCLE, (X4,2R))

The circle (X4,2R) is identified at X2474.
< 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) { 6, 30 }: Central Line L(6, 30) { 4, 39 }: Central Line L(4, 39) { 20, 32 }: Central Line L(20, 32) { 2, 99 }: Central Line L(2, 99) { 3, 230 }: Central Line L(3, 230) { 194, 315 }: Central Line L(194, 315) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_6 = SYMMEDIAN POINT (LEMOINE POINT, GREBE POINT) (0.6000, 0.2672) X_30 = EULER INFINITY POINT (0.7469, 0.7481) X_4 = ORTHOCENTER (0.6122, 0.3958) X_39 = BROCARD MIDPOINT (0.5778, 0.2305) X_20 = DE LONGCHAMPS POINT (0.3878, -0.1916) X_32 = 3rd POWER POINT (0.6400, 0.3332) X_2 = CENTROID (0.5374, 0.2000) X_99 = STEINER POINT (0.1109, 0.4322) X_3 = CIRCUMCENTER (0.5000, 0.1021) X_230 = -CEVA CONJUGATE OF X(114) (0.9746, 0.6698) X_194 = -CEVA CONJUGATE OF X(2) (0.6989, 0.3222) X_315 = ISOTOMIC CONJUGATE OF X(66) (0.3323, -0.0666) X_2549 = EXSIMILICENTER(MOSES CIRCLE, (X(4),2R)) (0.5679, 0.1833) A B C X6 X30 X4 X39 X20 X32 X2 X99 X3 X230 X194 X315 X2549 (a, b, c) = (5, 6, 7) | AB = 1

X2549 (EXSIMILICENTER(MOSES CIRCLE, (X4,2R))) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_2549 = EXSIMILICENTER(MOSES CIRCLE, (X_4,2R))."""

        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,
            orthocenter_of,
            promote_point_to_top,
            symmedian_point_of,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_02549(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_2549 = EXSIMILICENTER(MOSES CIRCLE, (X_4,2R)) on reference triangle ABC."""
            X_2549 = eval_trilinear_point(model, A, B, C, '(2*cos(B)*cos(C) - sin(A +  omega  )*csc(omega) )', ID="X_2549", classes=["selected", "target"])
            X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center", "incident"])
            X_30 = eval_trilinear_point(model, A, B, C, 'cos(A) - 2*cos(B)*cos(C)', ID="X_30", classes=["center", "incident"])
            central_line(model, X_6, X_30, 6, 30, incident=True)
            X_4 = orthocenter_of(model, A, B, C, ID="X_4", classes=["center", "incident"])
            X_39 = eval_trilinear_point(model, A, B, C, 'a*(b**(2) + c**(2))', ID="X_39", classes=["center", "incident"])
            central_line(model, X_4, X_39, 4, 39, incident=True)
            X_20 = eval_trilinear_point(model, A, B, C, 'cos(A) - cos(B)*cos(C)', ID="X_20", classes=["center", "incident"])
            X_32 = eval_trilinear_point(model, A, B, C, 'a**(3)', ID="X_32", classes=["center", "incident"])
            central_line(model, X_20, X_32, 20, 32, incident=True)
            return promote_point_to_top(model, X_2549)


        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_2549 on the given reference triangle."""
            model = create_model('X_2549 = EXSIMILICENTER(MOSES CIRCLE, (X_4,2R))')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_02549(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-02549.json"))
            write_center_svg(
                model_acute,
                here / "x-02549.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )