X1010

INTERCEPT OF EULER LINE AND LINE X1X_75

X1010 = crossdifference of every pair of points on line X647X798
< 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) { 2, 3 }: Euler Line { 10, 58 }: Central Line L(10, 58) { 1, 75 }: Central Line L(1, 75) { 8, 81 }: Central Line L(8, 81) { 72, 894 }: Central Line L(72, 894) { 312, 975 }: Central Line L(312, 975) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_1245 = ISOGONAL CONJUGATE OF X(1010) (0.5991, 0.2625) X_2 = CENTROID (0.5374, 0.2000) X_3 = CIRCUMCENTER (0.5000, 0.1021) X_10 = SPIEKER CENTER (0.5204, 0.1833) X_58 = ISOGONAL CONJUGATE OF X(10) (0.6107, 0.2850) X_1 = INCENTER (0.5714, 0.2333) X_75 = ISOTOMIC CONJUGATE OF INCENTER (0.4988, 0.1682) X_8 = NAGEL POINT (0.4694, 0.1333) X_81 = CEVAPOINT OF INCENTER AND SYMMEDIAN POINT (0.5849, 0.2510) X_72 = ISOGONAL CONJUGATE OF X(28) (0.4367, 0.0733) X_894 = ISOGONAL CONJUGATE OF X(893) (0.5501, 0.2184) X_312 = ISOTOMIC CONJUGATE OF X(57) (0.4256, 0.1081) X_975 = INTERSECTION OF LINES X(1)X(2) AND X(3)X(37) (0.5597, 0.2218) X_1010 = INTERCEPT OF EULER LINE AND LINE X(1)X(75) (0.5391, 0.2043) A B C X1245 X2 X3 X10 X58 X1 X75 X8 X81 X72 X894 X312 X975 X1010 (a, b, c) = (5, 6, 7) | AB = 1

X1010 (INTERCEPT OF EULER LINE AND LINE X1X_75) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_1010 = INTERCEPT OF EULER LINE AND LINE X_1X_75."""

        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,
            incenter_of,
            promote_point_to_top,
            spieker_center_of,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_01010(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_1010 = INTERCEPT OF EULER LINE AND LINE X_1X_75 on reference triangle ABC."""
            X_1010 = eval_trilinear_point(model, A, B, C, '(b*c*(a**(2) + (b + c)**(2))/(b + c))', ID="X_1010", classes=["selected", "target"])
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center"])
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center"])
            central_line(model, X_2, X_3, 2, 3)
            X_10 = spieker_center_of(model, A, B, C, ID="X_10", classes=["center", "incident"])
            X_58 = eval_trilinear_point(model, A, B, C, 'a/(b + c)', ID="X_58", classes=["center", "incident"])
            central_line(model, X_10, X_58, 10, 58, incident=True)
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_75 = eval_trilinear_point(model, A, B, C, '1/a**(2)', ID="X_75", classes=["center", "incident"])
            central_line(model, X_1, X_75, 1, 75, incident=True)
            return promote_point_to_top(model, X_1010)


        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_1010 on the given reference triangle."""
            model = create_model('X_1010 = INTERCEPT OF EULER LINE AND LINE X_1X_75')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_01010(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-01010.json"))
            write_center_svg(
                model_acute,
                here / "x-01010.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )