X3293¶
SS(a → b + c) OF X3
X3293 (SS(a → b + c) OF X3) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_3293 = SS(a → b + c) 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,
centroid_of,
construct_baseline_triangle,
create_model,
eval_trilinear_point,
incenter_of,
promote_point_to_top,
reflection_in_point,
)
from geometor.etc.render import write_center_svg
def construct_x_03293(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_3293 = SS(a → b + c) OF X_3 on reference triangle ABC."""
X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center"])
X_1193 = eval_trilinear_point(model, A, B, C, '(a*(b**(2) + c**(2) + a*b + a*c))', ID="X_1193", classes=["center"])
X_3293 = reflection_in_point(model, X_1, X_1193, ID="X_3293", classes=["selected", "target"], guide=False)
X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
central_line(model, X_1, X_2, 1, 2, incident=True)
X_58 = eval_trilinear_point(model, A, B, C, 'a/(b + c)', ID="X_58", 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_58, X_100, 58, 100, incident=True)
X_40 = eval_trilinear_point(model, A, B, C, 'cos(B) + cos(C) - cos(A) - 1', ID="X_40", classes=["center", "incident"])
X_209 = eval_trilinear_point(model, A, B, C, '((sin(B) + sin(C))*(sin(A) + sin(A - B) + sin(A - C)))', ID="X_209", classes=["center", "incident"])
central_line(model, X_40, X_209, 40, 209, incident=True)
return promote_point_to_top(model, X_3293)
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_3293 on the given reference triangle."""
model = create_model('X_3293 = SS(a → b + c) OF X_3')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_03293(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-03293.json"))
write_center_svg(
model_acute,
here / "x-03293.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)