X3854

X3533com(EULER TRIANGLE)

< 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) { 2, 3 }: Euler Line { 946, 3621 }: Central Line L(946, 3621) { 1699, 3617 }: Central Line L(1699, 3617) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_2 = CENTROID (0.5374, 0.2000) X_3 = CIRCUMCENTER (0.5000, 0.1021) X_4 = ORTHOCENTER (0.6122, 0.3958) X_946 = MIDPOINT OF X(1) AND X(4) (0.5918, 0.3145) X_3621 = H(X(8); M, 2) (0.2653, -0.0667) X_1699 = EXSIMILICENTER(BEVAN CIRCLE, NINE-POINT CIRCLE) (0.5986, 0.3416) X_3617 = H(X(1); M, -2) (0.5102, 0.1733) X_3854 = com(EULER TRIANGLE) (0.5726, 0.2921) A B C X2 X3 X4 X946 X3621 X1699 X3617 X3854 (a, b, c) = (5, 6, 7) | AB = 1

X3854 (X3533com(EULER TRIANGLE)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_3854 = X_3533com(EULER TRIANGLE)."""

        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,
            circumcenter_of,
            construct_baseline_triangle,
            create_model,
            eval_barycentric_point,
            eval_trilinear_point,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_03854(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3854 = X_3533com(EULER TRIANGLE) on reference triangle ABC."""
            X_3854 = eval_barycentric_point(model, A, B, C, '(5*a**(4) - 11*b**(4) - 11*c**(4) + 6*a**(2)*b**(2) + 6*a**(2)*c**(2) + 22*b**(2)*c**(2))', ID="X_3854", classes=["selected", "target"])
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center"])
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center"])
            central_line(model, X_2, X_3, 2, 3)
            X_946 = eval_trilinear_point(model, A, B, C, 'b*c*(a**(3)*(b + c) + (b - c)**(2)*(a**(2) - a*b - a*c - b**(2) - c**(2) - 2*b*c))', ID="X_946", classes=["center", "incident"])
            X_3621 = eval_trilinear_point(model, A, B, C, 'b*c*(5*a - 3*b - 3*c)', ID="X_3621", classes=["center", "incident"])
            central_line(model, X_946, X_3621, 946, 3621, incident=True)
            X_1699 = eval_trilinear_point(model, A, B, C, '2*cos(B - C) - cos(A) + cos(B) + cos(C) - 1', ID="X_1699", classes=["center", "incident"])
            X_3617 = eval_trilinear_point(model, A, B, C, 'b*c*(a - 3*b - 3*c)', ID="X_3617", classes=["center", "incident"])
            central_line(model, X_1699, X_3617, 1699, 3617, incident=True)
            return promote_point_to_top(model, X_3854)


        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_3854 on the given reference triangle."""
            model = create_model('X_3854 = X_3533com(EULER TRIANGLE)')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03854(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-03854.json"))
            write_center_svg(
                model_acute,
                here / "x-03854.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )