X3510

INTERSECTION OF LINES X1X_76 AND X6X_43

< 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) { 6, 43 }: Central Line L(6, 43) { 1, 76 }: Central Line L(1, 76) { 291, 511 }: Central Line L(291, 511) { 42, 894 }: Central Line L(42, 894) { 292, 2238 }: Central Line L(292, 2238) { 1402, 1423 }: Central Line L(1402, 1423) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_6 = SYMMEDIAN POINT (LEMOINE POINT, GREBE POINT) (0.6000, 0.2672) X_43 = -CEVA CONJUGATE OF X(1) (0.6358, 0.2963) X_1 = INCENTER (0.5714, 0.2333) X_76 = 3rd BROCARD POINT (0.4567, 0.1388) X_291 = 2nd SHARYGIN POINT (1.0249, 0.0364) X_511 = ISOGONAL CONJUGATE OF X(98) (0.2335, -0.3020) X_42 = CROSSPOINT OF INCENTER AND SYMMEDIAN POINT (0.5880, 0.2495) X_894 = ISOGONAL CONJUGATE OF X(893) (0.5501, 0.2184) X_292 = -HIRST INVERSE OF X(291) (1.0127, 0.0417) X_2238 = -ISOCONJUGATE OF X(741) (2.2505, 2.0410) X_1402 = -BETH CONJUGATE OF X(42) (0.6396, 0.3585) X_1423 = -BETH CONJUGATE OF X(192) (0.6537, 0.3692) X_3510 = INTERSECTION OF LINES X(1)X(76) AND X(6)X(43) (1.7132, 1.1732) A B C X6 X43 X1 X76 X291 X511 X42 X894 X292 X2238 X1402 X1423 X3510 (a, b, c) = (5, 6, 7) | AB = 1

X3510 (INTERSECTION OF LINES X1X_76 AND X6X_43) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_3510 = INTERSECTION OF LINES X_1X_76 AND X_6X_43."""

        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,
            construct_baseline_triangle,
            create_model,
            eval_trilinear_point,
            incenter_of,
            promote_point_to_top,
            symmedian_point_of,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_03510(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3510 = INTERSECTION OF LINES X_1X_76 AND X_6X_43 on reference triangle ABC."""
            X_3510 = eval_trilinear_point(model, A, B, C, '(b**(3)*c**(3) - a**(3)*b**(3) - a**(3)*c**(3) + a**(2)*b**(2)*c**(2))', ID="X_3510", classes=["selected", "target"])
            X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center", "incident"])
            X_43 = eval_trilinear_point(model, A, B, C, 'a*b + a*c - b*c', ID="X_43", classes=["center", "incident"])
            central_line(model, X_6, X_43, 6, 43, incident=True)
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_76 = eval_trilinear_point(model, A, B, C, '1/a**(3)', ID="X_76", classes=["center", "incident"])
            central_line(model, X_1, X_76, 1, 76, incident=True)
            X_291 = eval_trilinear_point(model, A, B, C, '1/(a**(2) - b*c)', ID="X_291", classes=["center", "incident"])
            X_511 = eval_trilinear_point(model, A, B, C, 'cos(A +  omega  )', ID="X_511", classes=["center", "incident"])
            central_line(model, X_291, X_511, 291, 511, incident=True)
            return promote_point_to_top(model, X_3510)


        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_3510 on the given reference triangle."""
            model = create_model('X_3510 = INTERSECTION OF LINES X_1X_76 AND X_6X_43')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03510(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-03510.json"))
            write_center_svg(
                model_acute,
                here / "x-03510.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )