Roughly
of Americans live in urban or suburban areas.
60%
90%
80%
70%

Dis the answer you perception is how you see the world 

answer is. c

Yes he is right they are bacteria

The circumcenter is  equidistant  from each vertex of the triangle. the circumcenter is at the  intersection  of the  perpendicular bisectors  of the triangle's sides. the circumcenter of a right triangle falls on the side opposite the right  angle. the incenter  of a triangle is always inside it.