X1841

ZOSMA TRANSFORM OF X71

< 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, 19 }: Central Line L(6, 19) { 4, 37 }: Central Line L(4, 37) { 53, 225 }: Central Line L(53, 225) { 241, 273 }: Central Line L(241, 273) { 278, 393 }: Central Line L(278, 393) { 281, 475 }: Central Line L(281, 475) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_1838 = ZOSMA TRANSFORM OF X(35) (0.6188, 0.4218) X_1859 = ZOSMA TRANSFORM OF X(226) (0.6113, 0.3833) X_6 = SYMMEDIAN POINT (LEMOINE POINT, GREBE POINT) (0.6000, 0.2672) X_19 = CLAWSON POINT (0.6246, 0.4244) X_4 = ORTHOCENTER (0.6122, 0.3958) X_37 = CROSSPOINT OF INCENTER AND CENTROID (0.5567, 0.2158) X_53 = SYMMEDIAN POINT OF ORTHIC TRIANGLE (0.6164, 0.4390) X_225 = -CEVA CONJUGATE OF X(65) (0.6246, 0.4451) X_241 = -LINE CONJUGATE OF X(55) (1.1217, 1.2442) X_273 = ISOGONAL CONJUGATE OF X(212) (0.6191, 0.4329) X_278 = ISOGONAL CONJUGATE OF X(219) (0.6278, 0.4577) X_393 = -CROSS CONJUGATE OF X(4) (0.6247, 0.5263) X_281 = -CROSS CONJUGATE OF X(9) (0.5796, 0.3202) X_475 = EULER LINE INTERCEPT OF LINE X(10)X(34) (-3.6531, -10.7644) X_1841 = ZOSMA TRANSFORM OF X(71) (0.6283, 0.4477) A B C X1838 X1859 X6 X19 X4 X37 X53 X225 X241 X273 X278 X393 X281 X475 X1841 (a, b, c) = (5, 6, 7) | AB = 1

X1841 (ZOSMA TRANSFORM OF X71) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_1841 = ZOSMA TRANSFORM OF X_71."""

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


        def construct_x_01841(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_1841 = ZOSMA TRANSFORM OF X_71 on reference triangle ABC."""
            X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center"])
            X_19 = eval_trilinear_point(model, A, B, C, 'tan(A)', ID="X_19", classes=["center"])
            X_4 = orthocenter_of(model, A, B, C, ID="X_4", classes=["center"])
            X_37 = eval_trilinear_point(model, A, B, C, 'b + c', ID="X_37", classes=["center"])
            central_line(model, X_6, X_19, 6, 19)
            central_line(model, X_4, X_37, 4, 37)
            X_1841 = intersect_lines(model, X_6, X_19, X_4, X_37, ID="X_1841", classes=["selected", "target"])
            X_53 = eval_trilinear_point(model, A, B, C, 'tan(A)*cos(B - C)', ID="X_53", classes=["center", "incident"])
            X_225 = eval_trilinear_point(model, A, B, C, '(sec(A))*(cos(B) + cos(C))', ID="X_225", classes=["center", "incident"])
            central_line(model, X_53, X_225, 53, 225, incident=True)
            return promote_point_to_top(model, X_1841)


        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_1841 on the given reference triangle."""
            model = create_model('X_1841 = ZOSMA TRANSFORM OF X_71')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_01841(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-01841.json"))
            write_center_svg(
                model_acute,
                here / "x-01841.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )