X101

Ψ(INCENTER, SYMMEDIAN POINT)

< 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) { 20, 152 }: Central Line L(20, 152) { 1, 41 }: Central Line L(1, 41) { 9, 48 }: Central Line L(9, 48) { 10, 98 }: Central Line L(10, 98) { 71, 74 }: Central Line L(71, 74) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_20 = DE LONGCHAMPS POINT (0.3878, -0.1916) X_152 = REFLECTION OF X(20) IN X(101) (0.0408, 1.2414) X_1 = INCENTER (0.5714, 0.2333) X_41 = -CEVA CONJUGATE OF X(31) (0.5823, 0.2244) X_9 = MITTENPUNKT (0.5110, 0.1615) X_48 = CROSSPOINT OF X(1) AND X(63) (0.5412, 0.1246) X_10 = SPIEKER CENTER (0.5204, 0.1833) X_98 = TARRY POINT (0.8891, -0.2281) X_71 = ISOGONAL CONJUGATE OF X(27) (0.4807, 0.0915) X_74 = ISOGONAL CONJUGATE OF EULER INFINITY POINT (0.7484, -0.3437) X_101 = Ψ(INCENTER, SYMMEDIAN POINT) (0.2143, 0.5249) A B C X20 X152 X1 X41 X9 X48 X10 X98 X71 X74 X101 (a, b, c) = (5, 6, 7) | AB = 1

X101 (Ψ(INCENTER, SYMMEDIAN POINT)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_101 = Ψ(INCENTER, SYMMEDIAN POINT)."""

        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,
            construct_baseline_triangle,
            create_model,
            eval_trilinear_point,
            incenter_of,
            mittenpunkt_of,
            promote_point_to_top,
            spieker_center_of,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_00101(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_101 = Ψ(INCENTER, SYMMEDIAN POINT) on reference triangle ABC."""
            X_101 = eval_trilinear_point(model, A, B, C, 'a/(b - c)', ID="X_101", classes=["selected", "target"])
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_41 = eval_trilinear_point(model, A, B, C, 'a**(2)*(b + c - a)', ID="X_41", classes=["center", "incident"])
            central_line(model, X_1, X_41, 1, 41, incident=True)
            X_9 = mittenpunkt_of(model, A, B, C, ID="X_9", classes=["center", "incident"])
            X_48 = eval_trilinear_point(model, A, B, C, 'tan(B) + tan(C)', ID="X_48", classes=["center", "incident"])
            central_line(model, X_9, X_48, 9, 48, incident=True)
            X_10 = spieker_center_of(model, A, B, C, ID="X_10", classes=["center", "incident"])
            X_98 = eval_trilinear_point(model, A, B, C, 'sec(A +  omega  )', ID="X_98", classes=["center", "incident"])
            central_line(model, X_10, X_98, 10, 98, incident=True)
            return promote_point_to_top(model, X_101)


        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_101 on the given reference triangle."""
            model = create_model('X_101 = Ψ(INCENTER, SYMMEDIAN POINT)')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_00101(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-00101.json"))
            write_center_svg(
                model_acute,
                here / "x-00101.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )