X3623

H(X8; M, -2)

< 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, 2 }: Nagel Line { 149, 388 }: Central Line L(149, 388) { 346, 1100 }: Central Line L(346, 1100) { 79, 1392 }: Central Line L(79, 1392) { 4, 1483 }: Central Line L(4, 1483) { 20, 1482 }: Central Line L(20, 1482) 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_2 = CENTROID (0.5374, 0.2000) X_149 = REFLECTION OF X(20) IN X(104) (1.3265, -0.3333) X_388 = ∩X(7)X(8) (0.5790, 0.2635) X_346 = ISOTOMIC CONJUGATE OF X(279) (0.3948, 0.0827) X_1100 = COMPLEMENT OF X(319) (0.5787, 0.2419) X_79 = ISOGONAL CONJUGATE OF X(35) (0.5976, 0.3019) X_1392 = ISOGONAL CONJUGATE OF X(1388) (0.6149, 0.4463) X_4 = ORTHOCENTER (0.6122, 0.3958) X_1483 = REFLECTION OF X(5) IN X(1) (0.5867, 0.2177) X_20 = DE LONGCHAMPS POINT (0.3878, -0.1916) X_1482 = REFLECTION OF CIRCUMCENTER IN INCENTER (0.6429, 0.3645) X_3623 = H(X(8); M, -2) (0.5918, 0.2533) A B C X1 X2 X149 X388 X346 X1100 X79 X1392 X4 X1483 X20 X1482 X3623 (a, b, c) = (5, 6, 7) | AB = 1

X3623 (H(X8; M, -2)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_3623 = H(X_8; M, -2)."""

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


        def construct_x_03623(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3623 = H(X_8; M, -2) on reference triangle ABC."""
            X_3623 = eval_trilinear_point(model, A, B, C, 'b*c*(7*a - b - c)', ID="X_3623", classes=["selected", "target"])
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
            central_line(model, X_1, X_2, 1, 2, incident=True)
            X_149 = eval_trilinear_point(model, A, B, C, '(b*c*(b**(3) + c**(3) - a**(3) + (a**(2) - b*c)*(b + c) + a*(b*c - b**(2) - c**(2))))', ID="X_149", classes=["center", "incident"])
            X_388 = eval_trilinear_point(model, A, B, C, 'b*c*(a**(2) + (b + c)**(2))/(b + c - a)', ID="X_388", classes=["center", "incident"])
            central_line(model, X_149, X_388, 149, 388, incident=True)
            X_346 = eval_trilinear_point(model, A, B, C, 'b*c*(b + c - a)**(2)', ID="X_346", classes=["center", "incident"])
            X_1100 = eval_trilinear_point(model, A, B, C, '2*a + b + c', ID="X_1100", classes=["center", "incident"])
            central_line(model, X_346, X_1100, 346, 1100, incident=True)
            return promote_point_to_top(model, X_3623)


        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_3623 on the given reference triangle."""
            model = create_model('X_3623 = H(X_8; M, -2)')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03623(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-03623.json"))
            write_center_svg(
                model_acute,
                here / "x-03623.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )