X2291¶
X2-ISOCONJUGATE OF X1155
X2291 (X2-ISOCONJUGATE OF X1155) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_2291 = X_2-ISOCONJUGATE OF X_1155."""
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_barycentric_point,
eval_trilinear_point,
isogonal_conjugate,
mittenpunkt_of,
promote_point_to_top,
symmedian_point_of,
)
from geometor.etc.render import write_center_svg
def construct_x_02291(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_2291 = X_2-ISOCONJUGATE OF X_1155 on reference triangle ABC."""
X_527 = eval_barycentric_point(model, A, B, C, '2*a**(2) - a*(b + c) - (b - c)**(2)', ID="X_527", classes=["center"])
X_2291 = isogonal_conjugate(model, A, B, C, X_527, ID="X_2291", classes=["selected", "target"])
X_9 = mittenpunkt_of(model, A, B, C, ID="X_9", classes=["center", "incident"])
X_100 = eval_trilinear_point(model, A, B, C, '1/(b - c)', ID="X_100", classes=["center", "incident"])
central_line(model, X_9, X_100, 9, 100, incident=True)
X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center", "incident"])
X_109 = eval_trilinear_point(model, A, B, C, 'a/(cos(B) - cos(C))', ID="X_109", classes=["center", "incident"])
central_line(model, X_6, X_109, 6, 109, incident=True)
X_19 = eval_trilinear_point(model, A, B, C, 'tan(A)', ID="X_19", classes=["center", "incident"])
X_108 = eval_trilinear_point(model, A, B, C, 'a/(sec(B) - sec(C))', ID="X_108", classes=["center", "incident"])
central_line(model, X_19, X_108, 19, 108, incident=True)
return promote_point_to_top(model, X_2291)
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_2291 on the given reference triangle."""
model = create_model('X_2291 = X_2-ISOCONJUGATE OF X_1155')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_02291(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-02291.json"))
write_center_svg(
model_acute,
here / "x-02291.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)