X1008

INTERCEPT OF EULER LINE AND LINE X1X_76

X1008 = anticomplement of X37148
< 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 { 1, 76 }: Central Line L(1, 76) 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_1 = INCENTER (0.5714, 0.2333) X_76 = 3rd BROCARD POINT (0.4567, 0.1388) X_1008 = INTERCEPT OF EULER LINE AND LINE X(1)X(76) (0.5404, 0.2077) A B C X2 X3 X4 X1 X76 X1008 (a, b, c) = (5, 6, 7) | AB = 1

X1008 (INTERCEPT OF EULER LINE AND LINE X1X_76) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_1008 = INTERCEPT OF EULER LINE AND LINE X_1X_76."""

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


        def construct_x_01008(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_1008 = INTERCEPT OF EULER LINE AND LINE X_1X_76 on reference triangle ABC."""
            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"])
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center"])
            X_76 = eval_trilinear_point(model, A, B, C, '1/a**(3)', ID="X_76", classes=["center"])
            central_line(model, X_2, X_3, 2, 3)
            central_line(model, X_1, X_76, 1, 76)
            X_1008 = intersect_lines(model, X_2, X_3, X_1, X_76, ID="X_1008", classes=["selected", "target"])
            return promote_point_to_top(model, X_1008)


        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_1008 on the given reference triangle."""
            model = create_model('X_1008 = INTERCEPT OF EULER LINE AND LINE X_1X_76')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_01008(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-01008.json"))
            write_center_svg(
                model_acute,
                here / "x-01008.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )