X3716

X659com(EXTOUCH TRIANGLE)

< A B C >: Reference Triangle △ABC < M_a M_b M_c >: Medial Triangle △M_a M_b M_c [ A B ]: Sideline AB (Base c = 1) [ B C ]: Sideline BC (Side a) [ C A ]: Sideline CA (Side b) { 2, 2254 }: Central Line L(2, 2254) { 11, 124 }: Central Line L(11, 124) { 118, 120 }: Central Line L(118, 120) { 522, 650 }: Central Line L(522, 650) { 659, 812 }: Central Line L(659, 812) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) M_a = Midpoint M_a of BC (0.8061, 0.2999) M_b = Midpoint M_b of CA (0.3061, 0.2999) M_c = Midpoint M_c of AB (0.5000, 0.0000) X_2 = CENTROID (0.5374, 0.2000) X_2254 = -ISOCONJUGATE OF X(919) (2.5714, 1.8663) X_11 = FEUERBACH POINT (0.7347, 0.0667) X_124 = -OF-MEDIAL-TRIANGLE (0.6243, 0.0030) X_118 = MIDPOINT OF X(4) AND X(101) (0.4133, 0.4603) X_120 = -OF-MEDIAL-TRIANGLE (0.3204, 0.3466) X_522 = ISOGONAL CONJUGATE OF X(109) (-0.0318, 0.3430) X_650 = CROSSDIFFERENCE OF X(1) AND X(3) (13.7143, -4.1991) X_659 = CROSSDIFFERENCE OF X(1) AND X(39) (1.9286, 2.2162) X_812 = ODD (- 1, 1) INFINITY POINT (0.1586, -0.2483) X_3716 = com(EXTOUCH TRIANGLE) (-0.4796, -0.6332) A B C Ma Mb Mc X2 X2254 X11 X124 X118 X120 X522 X650 X659 X812 X3716 (a, b, c) = (5, 6, 7) | AB = 1

X3716 (X659com(EXTOUCH TRIANGLE)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_3716 = X_659com(EXTOUCH 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,
            complement,
            construct_baseline_triangle,
            create_model,
            eval_trilinear_point,
            feuerbach_point_of,
            point_from_barycentrics,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_03716(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3716 = X_659com(EXTOUCH TRIANGLE) on reference triangle ABC."""
            X_2254 = eval_trilinear_point(model, A, B, C, '(b - c)*(a*b + a*c - b**(2) - c**(2))', ID="X_2254", classes=["center"])
            X_3716 = complement(model, A, B, C, X_2254, ID="X_3716", classes=["selected", "target"])
            X_11 = feuerbach_point_of(model, A, B, C, ID="X_11", classes=["center", "incident"])
            X_124 = eval_trilinear_point(model, A, B, C, '(b*c*(b + c - a)*(b - c)**(2)*((b + c)*(b**(2) + c**(2) - a**(2) - b*c) + a*b*c))', ID="X_124", classes=["center", "incident"])
            central_line(model, X_11, X_124, 11, 124, incident=True)
            X_118 = point_from_barycentrics(model, A, B, C, 0.28918651, -0.056547619, 0.76736111, ID="X_118", classes=["center", "incident"])
            X_120 = eval_trilinear_point(model, A, B, C, 'b*c*(2*a*b*c - (b + c)*(a**(2) + (b - c)**(2)))*(b**(2) + c**(2) - a*b -a*c)', ID="X_120", classes=["center", "incident"])
            central_line(model, X_118, X_120, 118, 120, incident=True)
            X_522 = eval_trilinear_point(model, A, B, C, '(cos(B) - cos(C))*(csc(A))', ID="X_522", classes=["center", "incident"])
            X_650 = eval_trilinear_point(model, A, B, C, 'cos(B) - cos(C)', ID="X_650", classes=["center", "incident"])
            central_line(model, X_522, X_650, 522, 650, incident=True)
            return promote_point_to_top(model, X_3716)


        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_3716 on the given reference triangle."""
            model = create_model('X_3716 = X_659com(EXTOUCH TRIANGLE)')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03716(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-03716.json"))
            write_center_svg(
                model_acute,
                here / "x-03716.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )