What does OB stand for?
OB stands for "Obtuse Bisectrix"
How to abbreviate "Obtuse Bisectrix"?
"Obtuse Bisectrix" can be abbreviated as OB
What is the meaning of OB abbreviation?
The meaning of OB abbreviation is "Obtuse Bisectrix"
What does OB mean?
OB as abbreviation means "Obtuse Bisectrix"
