X3825

X56com(3rd EULER 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) { 10, 11 }: Central Line L(10, 11) { 2, 35 }: Central Line L(2, 35) { 5, 515 }: Central Line L(5, 515) { 12, 551 }: Central Line L(12, 551) { 56, 535 }: Central Line L(56, 535) { 496, 519 }: Central Line L(496, 519) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_10 = SPIEKER CENTER (0.5204, 0.1833) X_11 = FEUERBACH POINT (0.7347, 0.0667) X_2 = CENTROID (0.5374, 0.2000) X_35 = {X(1),X(3)}-HARMONIC CONJUGATE OF X(36) (0.5373, 0.1706) X_5 = NINE-POINT CENTER (0.5561, 0.2489) X_515 = ISOGONAL CONJUGATE OF X(102) (0.6804, 0.7691) X_12 = {X(1),X(5)}-HARMONIC CONJUGATE OF X(11) (0.5641, 0.2407) X_551 = MIDPOINT OF X(1) AND X(2) (0.5544, 0.2166) X_56 = EXSIMILICENTER(CIRCUMCIRCLE, INCIRCLE) (0.6316, 0.3438) X_535 = DIRECTION OF VECTOR AX + BX + CX, where X = X(36) (0.8224, 0.7130) X_496 = {X(1),X(5)}-HARMONIC CONJUGATE OF X(495) (0.5843, 0.2201) X_519 = ISOGONAL CONJUGATE OF X(106) (0.9566, 0.6107) X_3825 = com(3rd EULER TRIANGLE) (0.5373, 0.1741) A B C X10 X11 X2 X35 X5 X515 X12 X551 X56 X535 X496 X519 X3825 (a, b, c) = (5, 6, 7) | AB = 1

X3825 (X56com(3rd EULER TRIANGLE)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_3825 = X_56com(3rd EULER 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,
            feuerbach_point_of,
            nine_point_center_of,
            promote_point_to_top,
            spieker_center_of,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_03825(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3825 = X_56com(3rd EULER TRIANGLE) on reference triangle ABC."""
            X_3825 = eval_barycentric_point(model, A, B, C, '(b-c)**(2)*a**(2)-(b+c)*b*c*a-(b**(2)-c**(2))**(2)', ID="X_3825", classes=["selected", "target"])
            X_10 = spieker_center_of(model, A, B, C, ID="X_10", classes=["center", "incident"])
            X_11 = feuerbach_point_of(model, A, B, C, ID="X_11", classes=["center", "incident"])
            central_line(model, X_10, X_11, 10, 11, incident=True)
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
            X_35 = eval_trilinear_point(model, A, B, C, '1 + 2*cos(A)', ID="X_35", classes=["center", "incident"])
            central_line(model, X_2, X_35, 2, 35, incident=True)
            X_5 = nine_point_center_of(model, A, B, C, ID="X_5", classes=["center", "incident"])
            X_515 = eval_trilinear_point(model, A, B, C, '(b + c)*sec(A) - b*sec(B) - c*sec(C)', ID="X_515", classes=["center", "incident"])
            central_line(model, X_5, X_515, 5, 515, incident=True)
            return promote_point_to_top(model, X_3825)


        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_3825 on the given reference triangle."""
            model = create_model('X_3825 = X_56com(3rd EULER TRIANGLE)')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03825(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-03825.json"))
            write_center_svg(
                model_acute,
                here / "x-03825.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )