X3750

X846com[n(MEDIAL)*n(INCENTRAL)]

< 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) { 42, 238 }: Central Line L(42, 238) { 333, 519 }: Central Line L(333, 519) { 81, 902 }: Central Line L(81, 902) { 43, 1001 }: Central Line L(43, 1001) { 518, 846 }: Central Line L(518, 846) 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_3 = CIRCUMCENTER (0.5000, 0.1021) X_42 = CROSSPOINT OF INCENTER AND SYMMEDIAN POINT (0.5880, 0.2495) X_238 = -LINE CONJUGATE OF X(37) (1.6190, 1.4775) X_333 = CEVAPOINT OF X(8) AND X(9) (0.4886, 0.1475) X_519 = ISOGONAL CONJUGATE OF X(106) (0.9566, 0.6107) X_81 = CEVAPOINT OF INCENTER AND SYMMEDIAN POINT (0.5849, 0.2510) X_902 = CROSSPOINT OF X(6) AND X(106) (1.2500, 1.2247) X_43 = -CEVA CONJUGATE OF X(1) (0.6358, 0.2963) X_1001 = MIDPOINT OF X(1) AND X(9) (0.5412, 0.1974) X_518 = ISOGONAL CONJUGATE OF X(105) (0.9154, 0.6489) X_846 = 4th SHARYGIN POINT (0.5437, 0.1969) X_3750 = com[n(MEDIAL)*n(INCENTRAL)] (0.5660, 0.2234) A B C X1 X3 X42 X238 X333 X519 X81 X902 X43 X1001 X518 X846 X3750 (a, b, c) = (5, 6, 7) | AB = 1

X3750 (X846com[n(MEDIAL)*n(INCENTRAL)]) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_3750 = X_846com[n(MEDIAL)*n(INCENTRAL)]."""

        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_barycentric_point,
            eval_trilinear_point,
            incenter_of,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_03750(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3750 = X_846com[n(MEDIAL)*n(INCENTRAL)] on reference triangle ABC."""
            X_3750 = eval_barycentric_point(model, A, B, C, '(a*(a**(2) - 2*a*b - 2*a*c - b*c))', ID="X_3750", 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_42 = eval_trilinear_point(model, A, B, C, 'a*(b + c)', ID="X_42", classes=["center", "incident"])
            X_238 = eval_trilinear_point(model, A, B, C, 'a**(2) - b*c', ID="X_238", classes=["center", "incident"])
            central_line(model, X_42, X_238, 42, 238, incident=True)
            X_333 = eval_trilinear_point(model, A, B, C, 'b*c*(b + c - a)/(b + c)', ID="X_333", classes=["center", "incident"])
            X_519 = eval_trilinear_point(model, A, B, C, '(2*a - b - c)/a', ID="X_519", classes=["center", "incident"])
            central_line(model, X_333, X_519, 333, 519, incident=True)
            return promote_point_to_top(model, X_3750)


        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_3750 on the given reference triangle."""
            model = create_model('X_3750 = X_846com[n(MEDIAL)*n(INCENTRAL)]')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03750(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-03750.json"))
            write_center_svg(
                model_acute,
                here / "x-03750.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )