X3294¶
SS(a → ab + ac) OF X3
X3294 (SS(a → ab + ac) OF X3) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_3294 = SS(a → ab + ac) OF X_3."""
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,
incenter_of,
promote_point_to_top,
symmedian_point_of,
)
from geometor.etc.render import write_center_svg
def construct_x_03294(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_3294 = SS(a → ab + ac) OF X_3 on reference triangle ABC."""
X_3294 = eval_trilinear_point(model, A, B, C, '((a*b + a*c)*((b*c + b*a)**(2) + (c*a + c*b)**(2) - (a*b + a*c)**(2)))', ID="X_3294", classes=["selected", "target"])
X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center", "incident"])
central_line(model, X_1, X_6, 1, 6, incident=True)
X_21 = eval_trilinear_point(model, A, B, C, '1/(cos(B) + cos(C))', ID="X_21", classes=["center", "incident"])
X_101 = eval_trilinear_point(model, A, B, C, 'a/(b - c)', ID="X_101", classes=["center", "incident"])
central_line(model, X_21, X_101, 21, 101, incident=True)
X_190 = eval_trilinear_point(model, A, B, C, 'b*c/(b - c)', ID="X_190", classes=["center", "incident"])
X_274 = eval_trilinear_point(model, A, B, C, 'b**(2)*c**(2)/(b + c)', ID="X_274", classes=["center", "incident"])
central_line(model, X_190, X_274, 190, 274, incident=True)
return promote_point_to_top(model, X_3294)
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_3294 on the given reference triangle."""
model = create_model('X_3294 = SS(a → ab + ac) OF X_3')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_03294(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-03294.json"))
write_center_svg(
model_acute,
here / "x-03294.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)