X3830¶
X3543com(EULER TRIANGLE)
X3830 = QA-P24 (AntiComplement of QA-P1 wrt the Morley Triangle) of quadrangle ABCX2 (see http://www.chrisvantienhoven.nl/quadrangle-objects/15-mathematics/quadrangle-objects/artikelen-qa/52-qa-p24.html)
X3830 (X3543com(EULER TRIANGLE)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_3830 = X_3543com(EULER 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,
midpoint,
point_from_barycentrics,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_03830(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_3830 = X_3543com(EULER TRIANGLE) on reference triangle ABC."""
X_381 = eval_trilinear_point(model, A, B, C, '2*cos(B - C) - cos(A)', ID="X_381", classes=["center"])
X_382 = eval_trilinear_point(model, A, B, C, 'cos(A) - 4*cos(B)*cos(C)', ID="X_382", classes=["center"])
X_3830 = midpoint(model, X_381, X_382, ID="X_3830", classes=["selected", "target"], guide=False)
X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center"])
X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center"])
central_line(model, X_2, X_3, 2, 3)
X_265 = eval_trilinear_point(model, A, B, C, 'sin(2*A)*csc(3*A)', ID="X_265", classes=["center", "incident"])
X_541 = point_from_barycentrics(model, A, B, C, 0.11755139, 0.64096444, -0.75851583, ID="X_541", classes=["center", "incident"])
central_line(model, X_265, X_541, 265, 541, incident=True)
X_115 = eval_trilinear_point(model, A, B, C, 'b*c*(b**(2) - c**(2))**(2)', ID="X_115", classes=["center", "incident"])
X_1384 = eval_trilinear_point(model, A, B, C, 'a*(b**(2) + c**(2) - 5*a**(2))', ID="X_1384", classes=["center", "incident"])
central_line(model, X_115, X_1384, 115, 1384, incident=True)
return promote_point_to_top(model, X_3830)
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_3830 on the given reference triangle."""
model = create_model('X_3830 = X_3543com(EULER TRIANGLE)')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_03830(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-03830.json"))
write_center_svg(
model_acute,
here / "x-03830.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)