X2841¶
ISOGONAL CONJUGATE OF X2757
X2841 (ISOGONAL CONJUGATE OF X2757) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_2841 = ISOGONAL CONJUGATE OF X_2757."""
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,
isogonal_conjugate,
point_from_barycentrics,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_02841(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_2841 = ISOGONAL CONJUGATE OF X_2757 on reference triangle ABC."""
X_2757 = point_from_barycentrics(model, A, B, C, 0.82828267, -0.2424244, 0.41414173, ID="X_2757", classes=["center"])
X_2841 = isogonal_conjugate(model, A, B, C, X_2757, ID="X_2841", classes=["selected", "target"])
X_56 = eval_trilinear_point(model, A, B, C, 'a/(b + c - a)', ID="X_56", classes=["center", "incident"])
X_106 = eval_trilinear_point(model, A, B, C, 'a/(2*a - b - c)', ID="X_106", classes=["center", "incident"])
central_line(model, X_56, X_106, 56, 106, incident=True)
X_121 = eval_trilinear_point(model, A, B, C, '(b*c*(b + c - 2*a)*(b**(3) + c**(3) + a*(b**(2) + c**(2)) - 2*b*c*(b + c)))', ID="X_121", 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_121, X_124, 121, 124, incident=True)
X_30 = eval_trilinear_point(model, A, B, C, 'cos(A) - 2*cos(B)*cos(C)', ID="X_30", 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_30, X_511, 30, 511, incident=True)
return promote_point_to_top(model, X_2841)
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_2841 on the given reference triangle."""
model = create_model('X_2841 = ISOGONAL CONJUGATE OF X_2757')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_02841(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-02841.json"))
write_center_svg(
model_acute,
here / "x-02841.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)