X619

COMPLEMENT OF X14

X619 is the complement of X14.
< 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) { 618, 620 }: Central Line L(618, 620) { 2, 14 }: Central Line L(2, 14) { 13, 99 }: Central Line L(13, 99) { 16, 299 }: Central Line L(16, 299) { 39, 396 }: Central Line L(39, 396) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_618 = COMPLEMENT OF X(13) (0.5122, 0.1590) X_620 = MIDPOINT OF X(618) AND X(619) (0.4308, 0.2580) X_2 = CENTROID (0.5374, 0.2000) X_14 = 2nd ISOGONIC CENTER (0.9134, -0.1143) X_13 = 1st ISOGONIC CENTER (FERMAT POINT, TORRICELLI POINT) (0.5879, 0.2819) X_99 = STEINER POINT (0.1109, 0.4322) X_16 = 2nd ISODYNAMIC POINT (1.8453, 2.3239) X_299 = ISOTOMIC CONJUGATE OF 2nd ISOGONIC CENTER (-1.1465, -1.6097) X_39 = BROCARD MIDPOINT (0.5778, 0.2305) X_396 = MIDPOINT OF X(13) AND X(15) (0.5699, 0.2349) X_619 = COMPLEMENT OF X(14) (0.3494, 0.3571) A B C X618 X620 X2 X14 X13 X99 X16 X299 X39 X396 X619 (a, b, c) = (5, 6, 7) | AB = 1

X619 (COMPLEMENT OF X14) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_619 = COMPLEMENT OF X_14."""

        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,
            centroid_of,
            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_00619(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_619 = COMPLEMENT OF X_14 on reference triangle ABC."""
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center"])
            X_14 = eval_trilinear_point(model, A, B, C, 'csc(A -  pi  /3)', ID="X_14", classes=["center"])
            X_13 = eval_trilinear_point(model, A, B, C, 'csc(A +  pi  /3)', ID="X_13", classes=["center"])
            X_99 = eval_trilinear_point(model, A, B, C, 'b*c/(b**(2) - c**(2))', ID="X_99", classes=["center"])
            central_line(model, X_2, X_14, 2, 14)
            central_line(model, X_13, X_99, 13, 99)
            X_619 = intersect_lines(model, X_2, X_14, X_13, X_99, ID="X_619", classes=["selected", "target"])
            X_16 = eval_trilinear_point(model, A, B, C, 'sin(A-  pi  /3)', ID="X_16", classes=["center", "incident"])
            X_299 = eval_trilinear_point(model, A, B, C, '(csc(A))**(2)*sin(A -  pi  /3)', ID="X_299", classes=["center", "incident"])
            central_line(model, X_16, X_299, 16, 299, incident=True)
            return promote_point_to_top(model, X_619)


        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_619 on the given reference triangle."""
            model = create_model('X_619 = COMPLEMENT OF X_14')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_00619(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-00619.json"))
            write_center_svg(
                model_acute,
                here / "x-00619.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )