At the sparta fault in greece, the hanging wall is below the footwall

Exploration mission 2;

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.

Scientist join many well-tested method to find out the age of a fossil.

hope this !