X1026

INTERSECTION OF LINES X1X_2 AND X100X_101

< 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 { 100, 101 }: Central Line L(100, 101) { 664, 668 }: Central Line L(664, 668) { 55, 1083 }: Central Line L(55, 1083) { 666, 1027 }: Central Line L(666, 1027) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_1027 = INTERSECTION OF LINES X(1)X(514) AND X(6)X(513) (1.0130, 0.0424) X_1 = INCENTER (0.5714, 0.2333) X_2 = CENTROID (0.5374, 0.2000) X_100 = ANTICOMPLEMENT OF FEUERBACH POINT (0.1429, 0.4666) X_101 = Ψ(INCENTER, SYMMEDIAN POINT) (0.2143, 0.5249) X_664 = TRILINEAR POLE OF LINE X(2)X(7) (0.2391, 0.5142) X_668 = TRILINEAR POLE OF LINE X(2)X(37) (0.0159, 0.3302) X_55 = INSIMILICENTER(CIRCUMCIRCLE, INCIRCLE) (0.5490, 0.1921) X_1083 = MIDPOINT OF X(105) AND X(644) (0.4771, 0.1213) X_666 = TRILINEAR POLE OF LINE X(2)X(11) (1.0982, 0.1428) X_1026 = INTERSECTION OF LINES X(1)X(2) AND X(100)X(101) (4.1429, 3.7326) A B C X1027 X1 X2 X100 X101 X664 X668 X55 X1083 X666 X1026 (a, b, c) = (5, 6, 7) | AB = 1

X1026 (INTERSECTION OF LINES X1X_2 AND X100X_101) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_1026 = INTERSECTION OF LINES X_1X_2 AND X_100X_101."""

        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_01026(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_1026 = INTERSECTION OF LINES X_1X_2 AND X_100X_101 on reference triangle ABC."""
            X_1026 = eval_trilinear_point(model, A, B, C, '((b**(2) + c**(2) - a*(b + c))/(b - c))', ID="X_1026", 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_100 = eval_trilinear_point(model, A, B, C, '1/(b - c)', ID="X_100", classes=["center", "incident"])
            X_101 = eval_trilinear_point(model, A, B, C, 'a/(b - c)', ID="X_101", classes=["center", "incident"])
            central_line(model, X_100, X_101, 100, 101, incident=True)
            X_664 = eval_trilinear_point(model, A, B, C, '1/(a*(b - c)*(b + c - a))', ID="X_664", classes=["center", "incident"])
            X_668 = eval_trilinear_point(model, A, B, C, '1/(a**(2)*(b - c))', ID="X_668", classes=["center", "incident"])
            central_line(model, X_664, X_668, 664, 668, incident=True)
            return promote_point_to_top(model, X_1026)


        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_1026 on the given reference triangle."""
            model = create_model('X_1026 = INTERSECTION OF LINES X_1X_2 AND X_100X_101')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_01026(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-01026.json"))
            write_center_svg(
                model_acute,
                here / "x-01026.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )