X2944¶
EXCENTRAL-ISOGONAL CONJUGATE OF X10
X2944 (EXCENTRAL-ISOGONAL CONJUGATE OF X10) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_2944 = EXCENTRAL-ISOGONAL CONJUGATE OF X_10."""
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,
centroid_of,
ceva_conjugate,
construct_baseline_triangle,
create_model,
eval_trilinear_point,
incenter_of,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_02944(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_2944 = EXCENTRAL-ISOGONAL CONJUGATE OF X_10 on reference triangle ABC."""
X_960 = eval_trilinear_point(model, A, B, C, '((b + c - a)*(b**(2) + c**(2) + a*b + a*c))', ID="X_960", classes=["center"])
X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center"])
X_2944 = ceva_conjugate(model, A, B, C, X_960, X_1, ID="X_2944", classes=["selected", "target"])
X_40 = eval_trilinear_point(model, A, B, C, 'cos(B) + cos(C) - cos(A) - 1', ID="X_40", 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_40, X_43, 40, 43, incident=True)
X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
X_572 = eval_trilinear_point(model, A, B, C, '(cos(A - U))', ID="X_572", classes=["center", "incident"])
central_line(model, X_2, X_572, 2, 572, incident=True)
X_165 = eval_trilinear_point(model, A, B, C, 'tan(B/2) + tan(C/2) - tan(A/2)', ID="X_165", classes=["center", "incident"])
X_411 = eval_trilinear_point(model, A, B, C, '(cos(B)*cos(C) - (cos(A) + cos(B) + cos(C))*cos(A))', ID="X_411", classes=["center", "incident"])
central_line(model, X_165, X_411, 165, 411, incident=True)
return promote_point_to_top(model, X_2944)
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_2944 on the given reference triangle."""
model = create_model('X_2944 = EXCENTRAL-ISOGONAL CONJUGATE OF X_10')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_02944(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-02944.json"))
write_center_svg(
model_acute,
here / "x-02944.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)