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X₃₉₈₈¶

X₅₄₆com(EXTOUCH TRIANGLE)

X₃₉₈₈ (X₅₄₆com(EXTOUCH TRIANGLE)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_3988 = X_546com(EXTOUCH TRIANGLE)."""

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


        def construct_x_03988(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3988 = X_546com(EXTOUCH TRIANGLE) on reference triangle ABC."""
            X_3988 = eval_barycentric_point(model, A, B, C, '(a*(b + c)*(3*b**(2) + 3*c**(2) - 3*a**(2) + b*c))', ID="X_3988", classes=["selected", "target"])
            X_10 = spieker_center_of(model, A, B, C, ID="X_10", classes=["center", "incident"])
            X_12 = eval_trilinear_point(model, A, B, C, '1 + cos(B - C)', ID="X_12", classes=["center", "incident"])
            central_line(model, X_10, X_12, 10, 12, incident=True)
            X_518 = eval_trilinear_point(model, A, B, C, '(a*b + a*c - b**(2) - c**(2))', ID="X_518", classes=["center", "incident"])
            X_3636 = eval_trilinear_point(model, A, B, C, 'b*c*(6*a + b + c)', ID="X_3636", classes=["center", "incident"])
            central_line(model, X_518, X_3636, 518, 3636, incident=True)
            X_960 = eval_trilinear_point(model, A, B, C, '((b + c - a)*(b**(2) + c**(2) + a*b + a*c))', ID="X_960", classes=["center", "incident"])
            X_3635 = eval_trilinear_point(model, A, B, C, 'b*c*(6*a - b - c)', ID="X_3635", classes=["center", "incident"])
            central_line(model, X_960, X_3635, 960, 3635, incident=True)
            return promote_point_to_top(model, X_3988)


        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_3988 on the given reference triangle."""
            model = create_model('X_3988 = X_546com(EXTOUCH TRIANGLE)')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03988(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-03988.json"))
            write_center_svg(
                model_acute,
                here / "x-03988.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X3988¶

X₃₉₈₈¶