X3359

MIDPOINT OF X2096 AND X3421

X3359 is the midpoint of X2096 and X3421.
< 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) { 2096, 3421 }: Central Line L(2096, 3421) { 1, 3 }: OI Line (Incenter–Circumcenter Line) { 9, 119 }: Central Line L(9, 119) { 84, 355 }: Central Line L(84, 355) { 200, 912 }: Central Line L(200, 912) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_2096 = REFLECTION OF X(4) IN X(57) (0.6153, 0.2263) X_3421 = ISOGONAL CONJUGATE OF X(3420) (0.4271, 0.0555) X_1 = INCENTER (0.5714, 0.2333) X_3 = CIRCUMCENTER (0.5000, 0.1021) X_9 = MITTENPUNKT (0.5110, 0.1615) X_119 = FEUERBACH ANTIPODE (0.3776, 0.4312) X_84 = ISOGONAL CONJUGATE OF X(40) (0.6071, 0.6816) X_355 = FUHRMANN CENTER (0.5408, 0.2645) X_200 = -CEVA CONJUGATE OF X(9) (0.4392, 0.1037) X_912 = -CEVA CONJUGATE OF X(3) (0.0031, -0.0428) X_3359 = MIDPOINT OF X(2096) AND X(3421) (0.5212, 0.1409) A B C X2096 X3421 X1 X3 X9 X119 X84 X355 X200 X912 X3359 (a, b, c) = (5, 6, 7) | AB = 1

X3359 (MIDPOINT OF X2096 AND X3421) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_3359 = MIDPOINT OF X_2096 AND X_3421."""

        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,
            circumcenter_of,
            construct_baseline_triangle,
            create_model,
            eval_trilinear_point,
            incenter_of,
            midpoint,
            mittenpunkt_of,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_03359(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3359 = MIDPOINT OF X_2096 AND X_3421 on reference triangle ABC."""
            X_40 = eval_trilinear_point(model, A, B, C, 'cos(B) + cos(C) - cos(A) - 1', ID="X_40", classes=["center"])
            X_57 = eval_trilinear_point(model, A, B, C, '1/(b + c - a)', ID="X_57", classes=["center"])
            X_3359 = midpoint(model, X_40, X_57, ID="X_3359", classes=["selected", "target"], guide=False)
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center", "incident"])
            central_line(model, X_1, X_3, 1, 3, incident=True)
            X_9 = mittenpunkt_of(model, A, B, C, ID="X_9", classes=["center", "incident"])
            X_119 = eval_trilinear_point(model, A, B, C, '(csc(A))*(-1 + cos(B) + cos(C))*(sin(2*B) + sin(2*C) + 2*(-1 + cos(A))*(sin(B) + sin(C)))', ID="X_119", classes=["center", "incident"])
            central_line(model, X_9, X_119, 9, 119, incident=True)
            X_84 = eval_trilinear_point(model, A, B, C, '1/(cos(B) + cos(C) - cos(A) - 1)', ID="X_84", classes=["center", "incident"])
            X_355 = eval_trilinear_point(model, A, B, C, 'a*cos(A) - (b + c)*cos(B - C)', ID="X_355", classes=["center", "incident"])
            central_line(model, X_84, X_355, 84, 355, incident=True)
            return promote_point_to_top(model, X_3359)


        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_3359 on the given reference triangle."""
            model = create_model('X_3359 = MIDPOINT OF X_2096 AND X_3421')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03359(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-03359.json"))
            write_center_svg(
                model_acute,
                here / "x-03359.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )