X964

INTERCEPT OF EULER LINE AND LINE X6X_8

< 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 { 6, 8 }: Central Line L(6, 8) { 10, 31 }: Central Line L(10, 31) { 1, 321 }: Central Line L(1, 321) 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_6 = SYMMEDIAN POINT (LEMOINE POINT, GREBE POINT) (0.6000, 0.2672) X_8 = NAGEL POINT (0.4694, 0.1333) X_10 = SPIEKER CENTER (0.5204, 0.1833) X_31 = 2nd POWER POINT (0.6228, 0.3008) X_1 = INCENTER (0.5714, 0.2333) X_321 = ISOTOMIC CONJUGATE OF X(81) (0.4800, 0.1527) X_964 = INTERCEPT OF EULER LINE AND LINE X(6)X(8) (0.5394, 0.2050) A B C X2 X3 X4 X6 X8 X10 X31 X1 X321 X964 (a, b, c) = (5, 6, 7) | AB = 1

X964 (INTERCEPT OF EULER LINE AND LINE X6X_8) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_964 = INTERCEPT OF EULER LINE AND LINE X_6X_8."""

        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,
            nagel_point_of,
            promote_point_to_top,
            spieker_center_of,
            symmedian_point_of,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_00964(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_964 = INTERCEPT OF EULER LINE AND LINE X_6X_8 on reference triangle ABC."""
            X_964 = eval_trilinear_point(model, A, B, C, '(b*c*(a**(4) + (b + c)*(a**(3) + a*b**(2) + a*c**(2) + a*b*c + (b + c)*(a**(2) + b*c))))', ID="X_964", 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_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center", "incident"])
            X_8 = nagel_point_of(model, A, B, C, ID="X_8", classes=["center", "incident"])
            central_line(model, X_6, X_8, 6, 8, incident=True)
            X_10 = spieker_center_of(model, A, B, C, ID="X_10", classes=["center", "incident"])
            X_31 = eval_trilinear_point(model, A, B, C, 'a**(2)', ID="X_31", classes=["center", "incident"])
            central_line(model, X_10, X_31, 10, 31, incident=True)
            return promote_point_to_top(model, X_964)


        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_964 on the given reference triangle."""
            model = create_model('X_964 = INTERCEPT OF EULER LINE AND LINE X_6X_8')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_00964(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-00964.json"))
            write_center_svg(
                model_acute,
                here / "x-00964.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )