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X₁₀₄₃¶

CEVAPOINT OF X₁ AND X₂₀

X₁₀₄₃ is the cevapoint of X₁ and X₂₀.

X₁₀₄₃ (CEVAPOINT OF X₁ AND X₂₀) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_1043 = CEVAPOINT OF X_1 AND X_20."""

        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,
            incenter_of,
            isogonal_conjugate,
            nagel_point_of,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_01043(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_1043 = CEVAPOINT OF X_1 AND X_20 on reference triangle ABC."""
            X_1042 = eval_trilinear_point(model, A, B, C, '((1 - cos(A))*(cos(B) + cos(C)))', ID="X_1042", classes=["center"])
            X_1043 = isogonal_conjugate(model, A, B, C, X_1042, ID="X_1043", classes=["selected", "target"])
            X_8 = nagel_point_of(model, A, B, C, ID="X_8", classes=["center", "incident"])
            X_21 = eval_trilinear_point(model, A, B, C, '1/(cos(B) + cos(C))', ID="X_21", classes=["center", "incident"])
            central_line(model, X_8, X_21, 8, 21, incident=True)
            X_29 = eval_trilinear_point(model, A, B, C, '(sec(A))/(cos(B) + cos(C))', ID="X_29", classes=["center", "incident"])
            X_33 = eval_trilinear_point(model, A, B, C, '1 + sec(A)', ID="X_33", classes=["center", "incident"])
            central_line(model, X_29, X_33, 29, 33, incident=True)
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_75 = eval_trilinear_point(model, A, B, C, '1/a**(2)', ID="X_75", classes=["center", "incident"])
            central_line(model, X_1, X_75, 1, 75, incident=True)
            return promote_point_to_top(model, X_1043)


        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_1043 on the given reference triangle."""
            model = create_model('X_1043 = CEVAPOINT OF X_1 AND X_20')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_01043(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-01043.json"))
            write_center_svg(
                model_acute,
                here / "x-01043.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X1043¶

X₁₀₄₃¶