We added the following geometric constructions and theorems. They are collected under the new title “Origami Geometry.”
Euler line
Simson’s theorem
Nine-point-circle
Meneraus’s Theorem
Ceva’s Theorem
Steiner-Lehmus Theorem
We added the following geometric constructions and theorems. They are collected under the new title “Origami Geometry.”
Euler line
Simson’s theorem
Nine-point-circle
Meneraus’s Theorem
Ceva’s Theorem
Steiner-Lehmus Theorem