X3233

VERTEX OF THE INSCRIBED KIEPERT PARABOLA

X3233 = intercept of pedal and antipedal lines of X110
< 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) { 30, 113 }: Central Line L(30, 113) { 114, 468 }: Central Line L(114, 468) { 110, 476 }: Central Line L(110, 476) { 99, 1304 }: Central Line L(99, 1304) { 1302, 1576 }: Central Line L(1302, 1576) { 355, 3109 }: Central Line L(355, 3109) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_30 = EULER INFINITY POINT (0.7469, 0.7481) X_113 = JERABEK ANTIPODE (0.4319, 0.4718) X_114 = KIEPERT ANTIPODE (0.3616, 0.4140) X_468 = -LINE CONJUGATE OF X(3) (0.7498, 0.7558) X_110 = FOCUS OF KIEPERT PARABOLA (0.2516, 0.5478) X_476 = TIXIER POINT (0.9824, 0.2685) X_99 = STEINER POINT (0.1109, 0.4322) X_1304 = COLLINGS TRANSFORM OF X(403) (0.7822, 0.5273) X_1302 = COLLINGS TRANSFORM OF X(381) (0.3827, 0.5987) X_1576 = ISOGONAL CONJUGATE OF X(850) (0.3750, 0.6166) X_355 = FUHRMANN CENTER (0.5408, 0.2645) X_3109 = ORTHOGONAL PROJECTION OF X(1) ON EULER LINE (0.5529, 0.2404) X_3233 = VERTEX OF THE INSCRIBED KIEPERT PARABOLA (0.4343, 0.4780) A B C X30 X113 X114 X468 X110 X476 X99 X1304 X1302 X1576 X355 X3109 X3233 (a, b, c) = (5, 6, 7) | AB = 1

X3233 (VERTEX OF THE INSCRIBED KIEPERT PARABOLA) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_3233 = VERTEX OF THE INSCRIBED KIEPERT PARABOLA."""

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


        def construct_x_03233(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3233 = VERTEX OF THE INSCRIBED KIEPERT PARABOLA on reference triangle ABC."""
            X_3233 = eval_trilinear_point(model, A, B, C, '(b*c*(a**(2) - b**(2))*(a**(2) - c**(2))*(-2*a**(4) + (b**(2) + c**(2))*a**(2) + (b**(2) - c**(2))**(2))**(2))', ID="X_3233", classes=["selected", "target"])
            X_30 = eval_trilinear_point(model, A, B, C, 'cos(A) - 2*cos(B)*cos(C)', ID="X_30", classes=["center", "incident"])
            X_113 = eval_trilinear_point(model, A, B, C, 'sin(B)*sin(C)*((sin(C))/(cos(C) - 2*cos(A)*cos(B)) + (sin(B))/(cos(B) - 2*cos(A)*cos(C)))', ID="X_113", classes=["center", "incident"])
            central_line(model, X_30, X_113, 30, 113, incident=True)
            X_114 = eval_trilinear_point(model, A, B, C, 'b*c*(b*sec(B +  omega  ) + c*sec(C +  omega  ))', ID="X_114", classes=["center", "incident"])
            X_468 = eval_trilinear_point(model, A, B, C, '(sec(A))*(cot(B) + cot(C) - 2*cot(A))', ID="X_468", classes=["center", "incident"])
            central_line(model, X_114, X_468, 114, 468, incident=True)
            X_110 = eval_trilinear_point(model, A, B, C, 'csc(B - C)', ID="X_110", classes=["center", "incident"])
            X_476 = eval_trilinear_point(model, A, B, C, '1/((1 + 2*cos(2*A))*sin(B - C))', ID="X_476", classes=["center", "incident"])
            central_line(model, X_110, X_476, 110, 476, incident=True)
            return promote_point_to_top(model, X_3233)


        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_3233 on the given reference triangle."""
            model = create_model('X_3233 = VERTEX OF THE INSCRIBED KIEPERT PARABOLA')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03233(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-03233.json"))
            write_center_svg(
                model_acute,
                here / "x-03233.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )