X2966

BARYCENTRIC PRODUCT X98*X99

X2966 = midpoint of X385 and X401
< 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) { 385, 401 }: Central Line L(385, 401) { 30, 98 }: Central Line L(30, 98) { 99, 249 }: Central Line L(99, 249) { 230, 297 }: Central Line L(230, 297) { 248, 290 }: Central Line L(248, 290) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_385 = -HIRST INVERSE OF X(6) (2.2863, 2.0795) X_401 = BAILEY POINT (-0.0758, -1.4044) X_30 = EULER INFINITY POINT (0.7469, 0.7481) X_98 = TARRY POINT (0.8891, -0.2281) X_99 = STEINER POINT (0.1109, 0.4322) X_249 = ISOGONAL CONJUGATE OF X(115) (0.5045, 0.3948) X_230 = -CEVA CONJUGATE OF X(114) (0.9746, 0.6698) X_297 = -HIRST INVERSE OF X(4) (0.8440, 1.0022) X_248 = -LINE CONJUGATE OF X(132) (0.8229, -0.0790) X_290 = ISOGONAL CONJUGATE OF X(237) (0.7829, -0.1380) X_2966 = BARYCENTRIC PRODUCT X(98)*X(99) (1.1053, 0.3375) A B C X385 X401 X30 X98 X99 X249 X230 X297 X248 X290 X2966 (a, b, c) = (5, 6, 7) | AB = 1

X2966 (BARYCENTRIC PRODUCT X98*X99) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_2966 = BARYCENTRIC PRODUCT X_98*X_99."""

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


        def construct_x_02966(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_2966 = BARYCENTRIC PRODUCT X_98*X_99 on reference triangle ABC."""
            X_385 = eval_trilinear_point(model, A, B, C, 'b*c*(a**(4) - b**(2)*c**(2))', ID="X_385", classes=["center"])
            X_401 = eval_trilinear_point(model, A, B, C, '(sin(2*B)*sin(2*C) - (sin(2*A))**(2))*(csc(A))', ID="X_401", classes=["center"])
            X_2966 = midpoint(model, X_385, X_401, ID="X_2966", classes=["selected", "target"], guide=False)
            X_30 = eval_trilinear_point(model, A, B, C, 'cos(A) - 2*cos(B)*cos(C)', ID="X_30", 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_30, X_98, 30, 98, incident=True)
            X_99 = eval_trilinear_point(model, A, B, C, 'b*c/(b**(2) - c**(2))', ID="X_99", classes=["center", "incident"])
            X_249 = eval_trilinear_point(model, A, B, C, '(csc(A))*(csc(B - C))**(2)', ID="X_249", classes=["center", "incident"])
            central_line(model, X_99, X_249, 99, 249, incident=True)
            X_230 = eval_trilinear_point(model, A, B, C, 'b*c*(a**(2)*(2*a**(2) - b**(2) - c**(2)) + (b**(2) - c**(2))**(2))', ID="X_230", classes=["center", "incident"])
            X_297 = eval_trilinear_point(model, A, B, C, 'csc(2*A)*cos(A +  omega  )', ID="X_297", classes=["center", "incident"])
            central_line(model, X_230, X_297, 230, 297, incident=True)
            return promote_point_to_top(model, X_2966)


        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_2966 on the given reference triangle."""
            model = create_model('X_2966 = BARYCENTRIC PRODUCT X_98*X_99')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_02966(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-02966.json"))
            write_center_svg(
                model_acute,
                here / "x-02966.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )