X1165

POINT ALTAIS

< 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) { 468, 1164 }: Central Line L(468, 1164) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_468 = -LINE CONJUGATE OF X(3) (0.7498, 0.7558) X_1164 = POINT ALTAIR (0.6143, 0.3811) X_1165 = POINT ALTAIS (0.6433, 0.4613) A B C X468 X1164 X1165 (a, b, c) = (5, 6, 7) | AB = 1

X1165 (POINT ALTAIS) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_1165 = POINT ALTAIS."""

        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,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_01165(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_1165 = POINT ALTAIS on reference triangle ABC."""
            X_1165 = eval_trilinear_point(model, A, B, C, '(( area - a**(2))*(2*area + b**(2) + c**(2))/(a*(b**(2) + c**(2) - a**(2))))', ID="X_1165", classes=["selected", "target"])
            X_468 = eval_trilinear_point(model, A, B, C, '(sec(A))*(cot(B) + cot(C) - 2*cot(A))', ID="X_468", classes=["center", "incident"])
            X_1164 = eval_trilinear_point(model, A, B, C, '(( area + a**(2))*(2*area - b**(2) - c**(2))/(a*(b**(2) + c**(2) - a**(2))))', ID="X_1164", classes=["center", "incident"])
            central_line(model, X_468, X_1164, 468, 1164, incident=True)
            return promote_point_to_top(model, X_1165)


        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_1165 on the given reference triangle."""
            model = create_model('X_1165 = POINT ALTAIS')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_01165(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-01165.json"))
            write_center_svg(
                model_acute,
                here / "x-01165.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )