X523¶
ISOGONAL CONJUGATE OF X110
As the isogonal conjugate of a point on the circumcircle, X523 lies on the line at infinity.
X523 (ISOGONAL CONJUGATE OF X110) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_523 = ISOGONAL CONJUGATE OF X_110."""
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,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_00523(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_523 = ISOGONAL CONJUGATE OF X_110 on reference triangle ABC."""
X_110 = eval_trilinear_point(model, A, B, C, 'csc(B - C)', ID="X_110", classes=["center"])
X_523 = isogonal_conjugate(model, A, B, C, X_110, ID="X_523", classes=["selected", "target"])
X_23 = eval_trilinear_point(model, A, B, C, 'a*(b**(4) + c**(4) - a**(4) - b**(2)*c**(2))', ID="X_23", classes=["center", "incident"])
X_385 = eval_trilinear_point(model, A, B, C, 'b*c*(a**(4) - b**(2)*c**(2))', ID="X_385", classes=["center", "incident"])
central_line(model, X_23, X_385, 23, 385, incident=True)
X_230 = eval_trilinear_point(model, A, B, C, 'b*c*(a**(2)*(2*a**(2) - b**(2) - c**(2)) + (b**(2) - c**(2))**(2))', ID="X_230", classes=["center", "incident"])
X_231 = eval_trilinear_point(model, A, B, C, '(cos(B))*(4*(sin(C))**(2) - 1)*(cos(A)*sin(B) - sin(A)*cos(B)) - (cos(C))*(4*(sin(B))**(2) - 1)*(cos(C)*sin(A) - sin(C)*cos(A))', ID="X_231", classes=["center", "incident"])
central_line(model, X_230, X_231, 230, 231, 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_523)
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_523 on the given reference triangle."""
model = create_model('X_523 = ISOGONAL CONJUGATE OF X_110')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_00523(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-00523.json"))
write_center_svg(
model_acute,
here / "x-00523.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)