X2375

CIR(X81)

< 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) { 37, 99 }: Central Line L(37, 99) { 110, 213 }: Central Line L(110, 213) { 101, 872 }: Central Line L(101, 872) { 100, 1500 }: Central Line L(100, 1500) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_37 = CROSSPOINT OF INCENTER AND CENTROID (0.5567, 0.2158) X_99 = STEINER POINT (0.1109, 0.4322) X_110 = FOCUS OF KIEPERT PARABOLA (0.2516, 0.5478) X_213 = -CEVA CONJUGATE OF X(42) (0.6135, 0.2833) X_101 = Ψ(INCENTER, SYMMEDIAN POINT) (0.2143, 0.5249) X_872 = INTERSECTION OF LINES X(37)X(42) AND X(43)X(75) (0.6029, 0.2656) X_100 = ANTICOMPLEMENT OF FEUERBACH POINT (0.1429, 0.4666) X_1500 = INSIMILICENTER OF MOSES CIRCLE AND INCIRCLE (0.5747, 0.2319) X_2375 = CIR(X(81)) (1.0001, 0.0006) A B C X37 X99 X110 X213 X101 X872 X100 X1500 X2375 (a, b, c) = (5, 6, 7) | AB = 1

X2375 (CIR(X81)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_2375 = CIR(X_81)."""

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


        def construct_x_02375(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_2375 = CIR(X_81) on reference triangle ABC."""
            X_37 = eval_trilinear_point(model, A, B, C, 'b + c', ID="X_37", classes=["center"])
            X_99 = eval_trilinear_point(model, A, B, C, 'b*c/(b**(2) - c**(2))', ID="X_99", classes=["center"])
            X_110 = eval_trilinear_point(model, A, B, C, 'csc(B - C)', ID="X_110", classes=["center"])
            X_213 = eval_trilinear_point(model, A, B, C, '(b + c)*a**(2)', ID="X_213", classes=["center"])
            central_line(model, X_37, X_99, 37, 99)
            central_line(model, X_110, X_213, 110, 213)
            X_2375 = intersect_lines(model, X_37, X_99, X_110, X_213, ID="X_2375", classes=["selected", "target"])
            X_101 = eval_trilinear_point(model, A, B, C, 'a/(b - c)', ID="X_101", classes=["center", "incident"])
            X_872 = eval_trilinear_point(model, A, B, C, '(a*(b + c))**(2)', ID="X_872", classes=["center", "incident"])
            central_line(model, X_101, X_872, 101, 872, incident=True)
            return promote_point_to_top(model, X_2375)


        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_2375 on the given reference triangle."""
            model = create_model('X_2375 = CIR(X_81)')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_02375(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-02375.json"))
            write_center_svg(
                model_acute,
                here / "x-02375.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )