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X₆₂₀¶

MIDPOINT OF X₆₁₈ AND X₆₁₉

X₆₂₀ is the midpoint of X₆₁₈ and X₆₁₉.

X₆₂₀ (MIDPOINT OF X₆₁₈ AND X₆₁₉) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_620 = MIDPOINT OF X_618 AND X_619."""

        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,
            centroid_of,
            circumcenter_of,
            complement,
            construct_baseline_triangle,
            create_model,
            eval_trilinear_point,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_00620(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_620 = MIDPOINT OF X_618 AND X_619 on reference triangle ABC."""
            X_115 = eval_trilinear_point(model, A, B, C, 'b*c*(b**(2) - c**(2))**(2)', ID="X_115", classes=["center"])
            X_620 = complement(model, A, B, C, X_115, ID="X_620", classes=["selected", "target"])
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
            X_99 = eval_trilinear_point(model, A, B, C, 'b*c/(b**(2) - c**(2))', ID="X_99", classes=["center", "incident"])
            central_line(model, X_2, X_99, 2, 99, incident=True)
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center", "incident"])
            X_114 = eval_trilinear_point(model, A, B, C, 'b*c*(b*sec(B +  omega  ) + c*sec(C +  omega  ))', ID="X_114", classes=["center", "incident"])
            central_line(model, X_3, X_114, 3, 114, incident=True)
            X_187 = eval_trilinear_point(model, A, B, C, 'a*(2*a**(2) - b**(2) - c**(2))', ID="X_187", classes=["center", "incident"])
            X_325 = eval_trilinear_point(model, A, B, C, '(csc(A))**(2)', ID="X_325", classes=["center", "incident"])
            central_line(model, X_187, X_325, 187, 325, incident=True)
            return promote_point_to_top(model, X_620)


        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_620 on the given reference triangle."""
            model = create_model('X_620 = MIDPOINT OF X_618 AND X_619')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_00620(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-00620.json"))
            write_center_svg(
                model_acute,
                here / "x-00620.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X620¶

X₆₂₀¶