Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
What is remarkable about these geometric relationships is that they can be experi-enced through pure geometric construction using just a compass. This can easily be experienced by both the young and mathematically inexperienced people. Knowledge of spherical trigonometry is NOT required and only basic trigonometry is required to explore the more complex relationships in more detail.