X2535¶
EXSIMILICENTER(INCIRCLE, SPIEKER RADICAL CIRCLE)
X2535 is the exsimilicenter(incircle, Spieker radical circle).
X2535 (EXSIMILICENTER(INCIRCLE, SPIEKER RADICAL CIRCLE)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_2535 = EXSIMILICENTER(INCIRCLE, SPIEKER RADICAL CIRCLE)."""
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,
feuerbach_point_of,
incenter_of,
intersect_lines,
point_from_barycentrics,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_02535(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_2535 = EXSIMILICENTER(INCIRCLE, SPIEKER RADICAL CIRCLE) on reference triangle ABC."""
X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center"])
X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center"])
X_11 = feuerbach_point_of(model, A, B, C, ID="X_11", classes=["center"])
X_2541 = point_from_barycentrics(model, A, B, C, 0.23292563, 0.28205914, 0.48501523, ID="X_2541", classes=["center"])
central_line(model, X_1, X_2, 1, 2)
central_line(model, X_11, X_2541, 11, 2541)
X_2535 = intersect_lines(model, X_1, X_2, X_11, X_2541, ID="X_2535", classes=["selected", "target"])
X_12 = eval_trilinear_point(model, A, B, C, '1 + cos(B - C)', ID="X_12", classes=["center", "incident"])
X_2540 = point_from_barycentrics(model, A, B, C, 0.30492756, 0.31085991, 0.38421252, ID="X_2540", classes=["center", "incident"])
central_line(model, X_12, X_2540, 12, 2540, incident=True)
return promote_point_to_top(model, X_2535)
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_2535 on the given reference triangle."""
model = create_model('X_2535 = EXSIMILICENTER(INCIRCLE, SPIEKER RADICAL CIRCLE)')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_02535(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-02535.json"))
write_center_svg(
model_acute,
here / "x-02535.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)