X3180

X13-CEVA CONJUGATE OF X2

< A B C >: Reference Triangle △ABC < K_a K_b K_c >: Anticomplementary Triangle △K_a K_b K_c [ A B ]: Sideline AB (Base c = 1) [ B C ]: Sideline BC (Side a) [ C A ]: Sideline CA (Side b) { 2, 298 }: Centroid–Symmedian Line { 2, 6 }: Centroid–Symmedian Line { 13, 533 }: Central Line L(13, 533) { 148, 531 }: Central Line L(148, 531) { 62, 619 }: Central Line L(62, 619) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) K_a = Anticomplementary Vertex K_a (1.6122, 0.5999) K_b = Anticomplementary Vertex K_b (-0.3878, 0.5999) K_c = Anticomplementary Vertex K_c (0.3878, -0.5999) X_2 = CENTROID (0.5374, 0.2000) X_298 = ISOTOMIC CONJUGATE OF 1st ISOGONIC CENTER (0.4724, 0.1301) X_6 = SYMMEDIAN POINT (LEMOINE POINT, GREBE POINT) (0.6000, 0.2672) X_13 = 1st ISOGONIC CENTER (FERMAT POINT, TORRICELLI POINT) (0.5879, 0.2819) X_533 = DIRECTION OF VECTOR AX + BX + CX, where X = X(18) (0.0625, -0.1448) X_148 = STEINER POINT OF ANTICOMPLEMENTARY TRIANGLE (1.3904, -0.2646) X_531 = DIRECTION OF VECTOR AX + BX + CX, where X = X(14) (0.9877, -0.1764) X_62 = ISOGONAL CONJUGATE OF X(18) (0.6446, 0.3409) X_619 = COMPLEMENT OF X(14) (0.3494, 0.3571) X_3180 = -CEVA CONJUGATE OF X(2) (0.6674, 0.3397) A B C Ka Kb Kc X2 X298 X6 X13 X533 X148 X531 X62 X619 X3180 (a, b, c) = (5, 6, 7) | AB = 1

X3180 (X13-CEVA CONJUGATE OF X2) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_3180 = X_13-CEVA CONJUGATE OF X_2."""

        from __future__ import annotations

        from pathlib import Path

        import sympy.geometry as spg
        from geometor.model import Model

        from geometor.etc.ops import (
            anticomplement,
            central_line,
            centroid_of,
            construct_baseline_triangle,
            create_model,
            eval_trilinear_point,
            point_from_barycentrics,
            promote_point_to_top,
            symmedian_point_of,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_03180(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3180 = X_13-CEVA CONJUGATE OF X_2 on reference triangle ABC."""
            X_298 = eval_trilinear_point(model, A, B, C, '(csc(A))**(2)*sin(A +  pi  /3)', ID="X_298", classes=["center"])
            X_3180 = anticomplement(model, A, B, C, X_298, ID="X_3180", classes=["selected", "target"])
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
            X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center", "incident"])
            central_line(model, X_2, X_6, 2, 6, incident=True)
            X_13 = eval_trilinear_point(model, A, B, C, 'csc(A +  pi  /3)', ID="X_13", classes=["center", "incident"])
            X_533 = point_from_barycentrics(model, A, B, C, 0.76482932, -0.13487259, -0.62995674, ID="X_533", classes=["center", "incident"])
            central_line(model, X_13, X_533, 13, 533, incident=True)
            X_148 = eval_trilinear_point(model, A, B, C, 'b*c*(a**(4) - (b**(2) - c**(2))**(2) + b**(2)*c**(2) - a**(2)*b**(2) - a**(2)*c**(2))', ID="X_148", classes=["center", "incident"])
            X_531 = point_from_barycentrics(model, A, B, C, -0.19452926, 0.78400969, -0.58948043, ID="X_531", classes=["center", "incident"])
            central_line(model, X_148, X_531, 148, 531, incident=True)
            return promote_point_to_top(model, X_3180)


        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_3180 on the given reference triangle."""
            model = create_model('X_3180 = X_13-CEVA CONJUGATE OF X_2')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03180(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-03180.json"))
            write_center_svg(
                model_acute,
                here / "x-03180.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )