X3864

PERSPECTOR OF ABC AND T(bc, c²)

X3864 is the perspector of ABC and t(bc, c²).
< 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, 39 }: Central Line L(1, 39) { 10, 257 }: Central Line L(10, 257) { 76, 334 }: Central Line L(76, 334) { 335, 726 }: Central Line L(335, 726) { 761, 813 }: Central Line L(761, 813) { 511, 1757 }: Central Line L(511, 1757) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_1 = INCENTER (0.5714, 0.2333) X_39 = BROCARD MIDPOINT (0.5778, 0.2305) X_10 = SPIEKER CENTER (0.5204, 0.1833) X_257 = ISOGONAL CONJUGATE OF X(172) (0.5240, 0.1822) X_76 = 3rd BROCARD POINT (0.4567, 0.1388) X_334 = ISOTOMIC CONJUGATE OF X(238) (1.0545, 0.0278) X_335 = ISOTOMIC CONJUGATE OF X(239) (1.0387, 0.0318) X_726 = EVEN (- 2, -1) INFINITY POINT (1.0187, 0.5358) X_761 = EVEN (1, 4) CIRCUMCIRCLE POINT (0.9239, -0.1820) X_813 = o-(- 1, 1) CIRCUMCIRCLE POINT (0.9721, -0.0916) X_511 = ISOGONAL CONJUGATE OF X(98) (0.2335, -0.3020) X_1757 = MIMOSA TRANSFORM OF X(295) (2.6667, 2.7217) X_3864 = PERSPECTOR OF ABC AND T(bc, c2) (1.0375, 0.0309) A B C X1 X39 X10 X257 X76 X334 X335 X726 X761 X813 X511 X1757 X3864 (a, b, c) = (5, 6, 7) | AB = 1

X3864 (PERSPECTOR OF ABC AND T(bc, c²)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_3864 = PERSPECTOR OF ABC AND T(bc, c²)."""

        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_barycentric_point,
            eval_trilinear_point,
            incenter_of,
            promote_point_to_top,
            spieker_center_of,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_03864(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3864 = PERSPECTOR OF ABC AND T(bc, c²) on reference triangle ABC."""
            X_3864 = eval_barycentric_point(model, A, B, C, '(a*(b**(2) - a*c)*(c**(2) - a*b)*(b**(2) + b*c + c**(2)))', ID="X_3864", classes=["selected", "target"])
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_39 = eval_trilinear_point(model, A, B, C, 'a*(b**(2) + c**(2))', ID="X_39", classes=["center", "incident"])
            central_line(model, X_1, X_39, 1, 39, incident=True)
            X_10 = spieker_center_of(model, A, B, C, ID="X_10", classes=["center", "incident"])
            X_257 = eval_trilinear_point(model, A, B, C, '1/(a**(3) + a*b*c)', ID="X_257", classes=["center", "incident"])
            central_line(model, X_10, X_257, 10, 257, incident=True)
            X_76 = eval_trilinear_point(model, A, B, C, '1/a**(3)', ID="X_76", classes=["center", "incident"])
            X_334 = eval_trilinear_point(model, A, B, C, 'b**(2)*c**(2)/(a**(2) - b*c)', ID="X_334", classes=["center", "incident"])
            central_line(model, X_76, X_334, 76, 334, incident=True)
            return promote_point_to_top(model, X_3864)


        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_3864 on the given reference triangle."""
            model = create_model('X_3864 = PERSPECTOR OF ABC AND T(bc, c²)')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03864(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-03864.json"))
            write_center_svg(
                model_acute,
                here / "x-03864.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )