Vestibule
Anterior. The space between the labia minora containing the orifice of the urethra. The urethra is in the anterior area. The perineal is between the front and the back.
No.
I am bound to take science in school (there's no way out of it).
a portion of space that is bounded on all sides
That depends! The identity operator must map something from a space X to a space Y. This mapping might be continuous - which is the case if the identify operator is bounded - or discontinuous - if the identity operator is unbounded.
interpleural space
Yes, unless specifically described as bounded.
It is called a polyhedron.
Any closed bounded subset of a metric space is compact.
Vestibule of vulva; vestibule of vagina; the space between the labia minor containing the openings of the vagina and urethra.
A polyhedron is a three dimensional shape. A polyhedron is bounded by a number (four or more) of polygons and encloses one space.
Almost everything is different!A polygon is a closed shape in 2 dimensional space, bounded by straight lines. Three dimension is a description of normal space.