1. A student observes a mineral that is a dark brown color, breaks into thin sheets and can be used as an electrical insulator. What is the mineral?

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Ineed you to put up a picture of the map so i can you as much as possible.

If it’s a full eclipse it’s a total if half way it’s partial and if creates a ring it’s annular

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.