X3944

X3550com(INTOUCH TRIANGLE)

< 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) incircle: Incircle of △ABC { 1, 4 }: Incenter–Orthocenter Line { 2, 846 }: Central Line L(2, 846) { 43, 908 }: Central Line L(43, 908) { 5, 986 }: Central Line L(5, 986) { 11, 982 }: Central Line L(11, 982) { 79, 987 }: Central Line L(79, 987) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_1 = INCENTER (0.5714, 0.2333) X_4 = ORTHOCENTER (0.6122, 0.3958) X_2 = CENTROID (0.5374, 0.2000) X_846 = 4th SHARYGIN POINT (0.5437, 0.1969) X_43 = -CEVA CONJUGATE OF X(1) (0.6358, 0.2963) X_908 = POINT ACUBENS (-0.8367, -1.7996) X_5 = NINE-POINT CENTER (0.5561, 0.2489) X_986 = INTERSECTION OF LINES X(1)X(3) AND X(8)X(38) (0.5588, 0.2101) X_11 = FEUERBACH POINT (0.7347, 0.0667) X_982 = INTERSECTION OF LINES X(1)X(3) AND X(2)X(38) (0.5508, 0.1955) X_79 = ISOGONAL CONJUGATE OF X(35) (0.5976, 0.3019) X_987 = ISOGONAL CONJUGATE OF X(986) (0.5829, 0.2572) X_3944 = com(INTOUCH TRIANGLE) (0.5603, 0.1888) A B C X1 X4 X2 X846 X43 X908 X5 X986 X11 X982 X79 X987 X3944 (a, b, c) = (5, 6, 7) | AB = 1

X3944 (X3550com(INTOUCH TRIANGLE)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_3944 = X_3550com(INTOUCH 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,
            centroid_of,
            construct_baseline_triangle,
            create_model,
            eval_barycentric_point,
            eval_trilinear_point,
            incenter_of,
            orthocenter_of,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_03944(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3944 = X_3550com(INTOUCH TRIANGLE) on reference triangle ABC."""
            X_3944 = eval_barycentric_point(model, A, B, C, '(b**(3) + c**(3) - b**(2)*c - b*c**(2) + a*b*c)', ID="X_3944", classes=["selected", "target"])
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_4 = orthocenter_of(model, A, B, C, ID="X_4", classes=["center", "incident"])
            central_line(model, X_1, X_4, 1, 4, incident=True)
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
            X_846 = eval_trilinear_point(model, A, B, C, '(- a**(2) + b**(2) + c**(2) + b*c + c*a + a*b)', ID="X_846", classes=["center", "incident"])
            central_line(model, X_2, X_846, 2, 846, incident=True)
            X_43 = eval_trilinear_point(model, A, B, C, 'a*b + a*c - b*c', ID="X_43", classes=["center", "incident"])
            X_908 = eval_barycentric_point(model, A, B, C, 'cos(B) + cos(C) - 1', ID="X_908", classes=["center", "incident"])
            central_line(model, X_43, X_908, 43, 908, incident=True)
            return promote_point_to_top(model, X_3944)


        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_3944 on the given reference triangle."""
            model = create_model('X_3944 = X_3550com(INTOUCH TRIANGLE)')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03944(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-03944.json"))
            write_center_svg(
                model_acute,
                here / "x-03944.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )