X555

(X1,X158)-ANSWER TO QUESTION A

< 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) { 7, 177 }: Central Line L(7, 177) { 234, 1088 }: Central Line L(234, 1088) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_7 = GERGONNE POINT (0.5903, 0.2769) X_177 = 1st MID-ARC POINT (0.5862, 0.2654) X_234 = -CEVA CONJUGATE OF X(177) (0.5946, 0.2875) X_1088 = TRILINEAR SQUARE OF X(7) (0.6052, 0.3210) X_555 = (X(1),X(158))-ANSWER TO QUESTION A (0.5982, 0.2990) A B C X7 X177 X234 X1088 X555 (a, b, c) = (5, 6, 7) | AB = 1

X555 ((X1,X158)-ANSWER TO QUESTION A) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_555 = (X_1,X_158)-ANSWER TO QUESTION A."""

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


        def construct_x_00555(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_555 = (X_1,X_158)-ANSWER TO QUESTION A on reference triangle ABC."""
            X_555 = eval_trilinear_point(model, A, B, C, '(sec(A/2))**(3)', ID="X_555", classes=["selected", "target"])
            X_7 = gergonne_point_of(model, A, B, C, ID="X_7", classes=["center", "incident"])
            X_177 = eval_trilinear_point(model, A, B, C, '(cos(B/2) + cos(C/2))*sec(A/2)', ID="X_177", classes=["center", "incident"])
            central_line(model, X_7, X_177, 7, 177, incident=True)
            X_234 = eval_trilinear_point(model, A, B, C, '((cos(B/2) + cos(C/2))*(cos(B/2)*cos(C/2))**(2))', ID="X_234", classes=["center", "incident"])
            X_1088 = eval_trilinear_point(model, A, B, C, '(sec(A/2))**(4)', ID="X_1088", classes=["center", "incident"])
            central_line(model, X_234, X_1088, 234, 1088, incident=True)
            X_85 = eval_trilinear_point(model, A, B, C, 'b**(2)*c**(2)/(b + c - a)', ID="X_85", classes=["center", "incident"])
            X_2090 = eval_trilinear_point(model, A, B, C, '((sin(B/2) + sin(C/2))*csc(A))', ID="X_2090", classes=["center", "incident"])
            central_line(model, X_85, X_2090, 85, 2090, incident=True)
            return promote_point_to_top(model, X_555)


        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_555 on the given reference triangle."""
            model = create_model('X_555 = (X_1,X_158)-ANSWER TO QUESTION A')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_00555(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-00555.json"))
            write_center_svg(
                model_acute,
                here / "x-00555.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )