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X₃₂₄₁¶

REFLECTION OF X₂ IN X₁

X₃₂₄₁ is the reflection of X₂ in X₁.

X₃₂₄₁ (REFLECTION OF X₂ IN X₁) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_3241 = REFLECTION OF X_2 IN X_1."""

        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,
            construct_baseline_triangle,
            create_model,
            eval_trilinear_point,
            gergonne_point_of,
            incenter_of,
            midpoint,
            point_from_barycentrics,
            promote_point_to_top,
            symmedian_point_of,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_03241(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3241 = REFLECTION OF X_2 IN X_1 on reference triangle ABC."""
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center"])
            X_145 = eval_trilinear_point(model, A, B, C, 'b*c*(3*a - b - c)', ID="X_145", classes=["center"])
            X_3241 = midpoint(model, X_2, X_145, ID="X_3241", classes=["selected", "target"], guide=False)
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            central_line(model, X_1, X_2, 1, 2, incident=True)
            X_7 = gergonne_point_of(model, A, B, C, ID="X_7", classes=["center", "incident"])
            X_528 = point_from_barycentrics(model, A, B, C, -0.26726124, 0.80178373, -0.53452248, ID="X_528", classes=["center", "incident"])
            central_line(model, X_7, X_528, 7, 528, incident=True)
            X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center", "incident"])
            X_644 = eval_trilinear_point(model, A, B, C, '((b + c - a)/(b - c))', ID="X_644", classes=["center", "incident"])
            central_line(model, X_6, X_644, 6, 644, incident=True)
            return promote_point_to_top(model, X_3241)


        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_3241 on the given reference triangle."""
            model = create_model('X_3241 = REFLECTION OF X_2 IN X_1')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03241(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-03241.json"))
            write_center_svg(
                model_acute,
                here / "x-03241.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X3241¶

X₃₂₄₁¶