X3926¶
X3053com[INVERSE(n(TANGENTIAL TRIANGLE))]
X3926 (X3053com[INVERSE(n(TANGENTIAL TRIANGLE))]) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_3926 = X_3053com[INVERSE(n(TANGENTIAL TRIANGLE))]."""
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,
circumcenter_of,
construct_baseline_triangle,
create_model,
eval_trilinear_point,
isogonal_conjugate,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_03926(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_3926 = X_3053com[INVERSE(n(TANGENTIAL TRIANGLE))] on reference triangle ABC."""
X_2207 = eval_trilinear_point(model, A, B, C, '(sin(A)*(tan(A))**(2))', ID="X_2207", classes=["center"])
X_3926 = isogonal_conjugate(model, A, B, C, X_2207, ID="X_3926", classes=["selected", "target"])
X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
X_39 = eval_trilinear_point(model, A, B, C, 'a*(b**(2) + c**(2))', ID="X_39", classes=["center", "incident"])
central_line(model, X_2, X_39, 2, 39, incident=True)
X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center", "incident"])
X_69 = eval_trilinear_point(model, A, B, C, '(cos(A))/a**(2)', ID="X_69", classes=["center", "incident"])
central_line(model, X_3, X_69, 3, 69, incident=True)
X_20 = eval_trilinear_point(model, A, B, C, 'cos(A) - cos(B)*cos(C)', ID="X_20", classes=["center", "incident"])
X_99 = eval_trilinear_point(model, A, B, C, 'b*c/(b**(2) - c**(2))', ID="X_99", classes=["center", "incident"])
central_line(model, X_20, X_99, 20, 99, incident=True)
return promote_point_to_top(model, X_3926)
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_3926 on the given reference triangle."""
model = create_model('X_3926 = X_3053com[INVERSE(n(TANGENTIAL TRIANGLE))]')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_03926(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-03926.json"))
write_center_svg(
model_acute,
here / "x-03926.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)