X915¶
ISOGONAL CONJUGATE OF X912
X915 (ISOGONAL CONJUGATE OF X912) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_915 = ISOGONAL CONJUGATE OF X_912."""
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,
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_00915(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_915 = ISOGONAL CONJUGATE OF X_912 on reference triangle ABC."""
X_912 = eval_trilinear_point(model, A, B, C, '(a**(2) - b**(2) - c**(2))*(a**(3)*(b + c) - a**(2)*(b**(2) + c**(2)) - a*(b - c)**(2)*(b + c) + (b**(2) - c**(2))**(2))', ID="X_912", classes=["center"])
X_915 = isogonal_conjugate(model, A, B, C, X_912, ID="X_915", classes=["selected", "target"])
X_34 = eval_trilinear_point(model, A, B, C, '1 - sec(A)', ID="X_34", classes=["center", "incident"])
X_46 = eval_trilinear_point(model, A, B, C, 'cos(B) + cos(C) - cos(A)', ID="X_46", classes=["center", "incident"])
central_line(model, X_34, X_46, 34, 46, incident=True)
X_19 = eval_trilinear_point(model, A, B, C, 'tan(A)', ID="X_19", classes=["center", "incident"])
X_101 = eval_trilinear_point(model, A, B, C, 'a/(b - c)', ID="X_101", classes=["center", "incident"])
central_line(model, X_19, X_101, 19, 101, incident=True)
X_24 = eval_trilinear_point(model, A, B, C, 'sec(A)*cos(2*A)', ID="X_24", classes=["center", "incident"])
X_108 = eval_trilinear_point(model, A, B, C, 'a/(sec(B) - sec(C))', ID="X_108", classes=["center", "incident"])
central_line(model, X_24, X_108, 24, 108, incident=True)
return promote_point_to_top(model, X_915)
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_915 on the given reference triangle."""
model = create_model('X_915 = ISOGONAL CONJUGATE OF X_912')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_00915(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-00915.json"))
write_center_svg(
model_acute,
here / "x-00915.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)