X241

X1-LINE CONJUGATE OF X55

< 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) { 1, 3 }: OI Line (Incenter–Circumcenter Line) { 7, 37 }: Central Line L(7, 37) { 6, 77 }: Central Line L(6, 77) { 2, 85 }: Central Line L(2, 85) { 63, 220 }: Central Line L(63, 220) { 218, 222 }: Central Line L(218, 222) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_1 = INCENTER (0.5714, 0.2333) X_55 = INSIMILICENTER(CIRCUMCIRCLE, INCIRCLE) (0.5490, 0.1921) X_3 = CIRCUMCENTER (0.5000, 0.1021) X_7 = GERGONNE POINT (0.5903, 0.2769) X_37 = CROSSPOINT OF INCENTER AND CENTROID (0.5567, 0.2158) X_6 = SYMMEDIAN POINT (LEMOINE POINT, GREBE POINT) (0.6000, 0.2672) X_77 = ISOGONAL CONJUGATE OF X(33) (0.5270, 0.1305) X_2 = CENTROID (0.5374, 0.2000) X_85 = ISOTOMIC CONJUGATE OF X(9) (0.5610, 0.2421) X_63 = ISOGONAL CONJUGATE OF X(19) (0.4566, 0.0823) X_220 = -CEVA CONJUGATE OF X(55) (0.4826, 0.1278) X_218 = -CEVA CONJUGATE OF X(55) (0.6557, 0.3333) X_222 = -CEVA CONJUGATE OF X(56) (0.5653, 0.1568) X_241 = -LINE CONJUGATE OF X(55) (1.1217, 1.2442) A B C X1 X55 X3 X7 X37 X6 X77 X2 X85 X63 X220 X218 X222 X241 (a, b, c) = (5, 6, 7) | AB = 1

X241 (X1-LINE CONJUGATE OF X55) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_241 = X_1-LINE CONJUGATE OF X_55."""

        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_trilinear_point,
            gergonne_point_of,
            incenter_of,
            promote_point_to_top,
            symmedian_point_of,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_00241(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_241 = X_1-LINE CONJUGATE OF X_55 on reference triangle ABC."""
            X_241 = eval_trilinear_point(model, A, B, C, '(cos(B/2))**(4) - ((cos(A/2))**(2))*((cos(B/2))**(2) +(cos(C/2))**(2)) + (cos(C/2))**(4)', ID="X_241", classes=["selected", "target"])
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center", "incident"])
            central_line(model, X_1, X_3, 1, 3, incident=True)
            X_7 = gergonne_point_of(model, A, B, C, ID="X_7", classes=["center", "incident"])
            X_37 = eval_trilinear_point(model, A, B, C, 'b + c', ID="X_37", classes=["center", "incident"])
            central_line(model, X_7, X_37, 7, 37, incident=True)
            X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center", "incident"])
            X_77 = eval_trilinear_point(model, A, B, C, '1/(1 + sec(A))', ID="X_77", classes=["center", "incident"])
            central_line(model, X_6, X_77, 6, 77, incident=True)
            return promote_point_to_top(model, X_241)


        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_241 on the given reference triangle."""
            model = create_model('X_241 = X_1-LINE CONJUGATE OF X_55')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_00241(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-00241.json"))
            write_center_svg(
                model_acute,
                here / "x-00241.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )