Answer:
The circumcenter is a point which is the result of the intersection of three lines that cross each side of the triangle with right angle, and through the middle point of each side. That triple intersection is called circumcenter, and its refer to the center of a circumference that intersect each vertex of the triangle,
So, for the given obtuse triangle attached, the circumcenter is found by drawing the three lines intersection. Remember, each line must cross the middle point of the side, with a right angle. If we do this, we will notice if the circumcenter is inside or outside the triangle, or if it's at a vertex or on a side.
Therefore, the circumcenter is outside the triangle.
