X641

COMPLEMENT OF X485

X641 is the complement of X485.
< 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) { 485, 488 }: Central Line L(485, 488) { 140, 141 }: Central Line L(140, 141) { 2, 372 }: Central Line L(2, 372) { 3, 639 }: Central Line L(3, 639) { 39, 615 }: Central Line L(39, 615) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_485 = VECTEN POINT (0.5773, 0.2578) X_488 = ANTICOMPLEMENT OF X(485) (0.4576, 0.0844) X_140 = MIDPOINT OF X(3) AND X(5) (0.5281, 0.1755) X_141 = COMPLEMENT OF SYMMEDIAN POINT (0.5061, 0.1663) X_2 = CENTROID (0.5374, 0.2000) X_372 = {X(3),X(6)}-HARMONIC CONJUGATE OF X(371) (0.7148, 0.4568) X_3 = CIRCUMCENTER (0.5000, 0.1021) X_639 = COMPLEMENT OF X(371) (0.5235, 0.1951) X_39 = BROCARD MIDPOINT (0.5778, 0.2305) X_615 = ISOGONAL CONJUGATE OF X(589) (0.4337, 0.0885) X_641 = COMPLEMENT OF X(485) (0.5175, 0.1711) A B C X485 X488 X140 X141 X2 X372 X3 X639 X39 X615 X641 (a, b, c) = (5, 6, 7) | AB = 1

X641 (COMPLEMENT OF X485) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_641 = COMPLEMENT OF X_485."""

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


        def construct_x_00641(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_641 = COMPLEMENT OF X_485 on reference triangle ABC."""
            X_485 = eval_trilinear_point(model, A, B, C, 'sec(A -  pi  /4)', ID="X_485", classes=["center"])
            X_488 = eval_trilinear_point(model, A, B, C, '((cos(A))*(1 + csc(A)*sin(B)*sin(C)))', ID="X_488", classes=["center"])
            X_641 = midpoint(model, X_485, X_488, ID="X_641", classes=["selected", "target"], guide=False)
            X_140 = eval_trilinear_point(model, A, B, C, '2*cos(A) + cos(B - C)', ID="X_140", classes=["center", "incident"])
            X_141 = eval_trilinear_point(model, A, B, C, 'b*c*(b**(2) + c**(2))', ID="X_141", classes=["center", "incident"])
            central_line(model, X_140, X_141, 140, 141, incident=True)
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
            X_372 = eval_trilinear_point(model, A, B, C, 'cos(A +  pi  /4)', ID="X_372", classes=["center", "incident"])
            central_line(model, X_2, X_372, 2, 372, incident=True)
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center", "incident"])
            X_639 = point_from_barycentrics(model, A, B, C, 0.35035787, 0.32442401, 0.32521812, ID="X_639", classes=["center", "incident"])
            central_line(model, X_3, X_639, 3, 639, incident=True)
            return promote_point_to_top(model, X_641)


        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_641 on the given reference triangle."""
            model = create_model('X_641 = COMPLEMENT OF X_485')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_00641(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-00641.json"))
            write_center_svg(
                model_acute,
                here / "x-00641.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )