X2752¶
SR(X105, X110)
X2752 (SR(X105, X110)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_2752 = SR(X_105, 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,
circumcenter_of,
construct_baseline_triangle,
create_model,
eval_trilinear_point,
point_from_barycentrics,
promote_point_to_top,
reflection_in_point,
)
from geometor.etc.render import write_center_svg
def construct_x_02752(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_2752 = SR(X_105, X_110) on reference triangle ABC."""
X_2691 = point_from_barycentrics(model, A, B, C, 0.061603943, 1.0497312, -0.11133513, ID="X_2691", classes=["center"])
X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center"])
X_2752 = reflection_in_point(model, X_2691, X_3, ID="X_2752", classes=["selected", "target"], guide=False)
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_100 = eval_trilinear_point(model, A, B, C, '1/(b - c)', ID="X_100", classes=["center", "incident"])
central_line(model, X_23, X_100, 23, 100, incident=True)
X_108 = eval_trilinear_point(model, A, B, C, 'a/(sec(B) - sec(C))', ID="X_108", classes=["center", "incident"])
X_468 = eval_trilinear_point(model, A, B, C, '(sec(A))*(cot(B) + cot(C) - 2*cot(A))', ID="X_468", classes=["center", "incident"])
central_line(model, X_108, X_468, 108, 468, incident=True)
X_105 = eval_trilinear_point(model, A, B, C, '1/(b**(2) + c**(2) - a*(b + c))', ID="X_105", classes=["center", "incident"])
X_523 = eval_trilinear_point(model, A, B, C, 'sin(B -C)', ID="X_523", classes=["center", "incident"])
central_line(model, X_105, X_523, 105, 523, incident=True)
return promote_point_to_top(model, X_2752)
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_2752 on the given reference triangle."""
model = create_model('X_2752 = SR(X_105, X_110)')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_02752(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-02752.json"))
write_center_svg(
model_acute,
here / "x-02752.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)