X3410¶
INTERSECTION OF LINES X2X_98 AND X4X_93
X3410 (INTERSECTION OF LINES X2X_98 AND X4X_93) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_3410 = INTERSECTION OF LINES X_2X_98 AND X_4X_93."""
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,
orthocenter_of,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_03410(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_3410 = INTERSECTION OF LINES X_2X_98 AND X_4X_93 on reference triangle ABC."""
X_3410 = eval_trilinear_point(model, A, B, C, '(b*c*(a*b*c + 2*(b**(3)*cos(B) + c**(3)*cos(C) - a**(3)*cos(A))))', ID="X_3410", classes=["selected", "target"])
X_4 = orthocenter_of(model, A, B, C, ID="X_4", classes=["center", "incident"])
X_93 = eval_trilinear_point(model, A, B, C, 'sec(3*A)', ID="X_93", classes=["center", "incident"])
central_line(model, X_4, X_93, 4, 93, incident=True)
X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
X_98 = eval_trilinear_point(model, A, B, C, 'sec(A + omega )', ID="X_98", classes=["center", "incident"])
central_line(model, X_2, X_98, 2, 98, incident=True)
X_23 = eval_trilinear_point(model, A, B, C, 'a*(b**(4) + c**(4) - a**(4) - b**(2)*c**(2))', ID="X_23", classes=["center", "incident"])
X_343 = eval_trilinear_point(model, A, B, C, 'cot(A)*cos(B - C)', ID="X_343", classes=["center", "incident"])
central_line(model, X_23, X_343, 23, 343, incident=True)
return promote_point_to_top(model, X_3410)
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_3410 on the given reference triangle."""
model = create_model('X_3410 = INTERSECTION OF LINES X_2X_98 AND X_4X_93')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_03410(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-03410.json"))
write_center_svg(
model_acute,
here / "x-03410.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)