Answer:
Option 1 is correct.
Step-by-step explanation:
Circumcenter of a triangle is that point where the perpendicular bisector meets or intersects of a triangle.it is a point which is equidistant from the sides of a triangle.
Hence, it lies inside the triangle
Therefore, option 1 is correct.
Option 2 is incorrect because center can not be outside of a figure.
Option 3 and 4 are incorrect because side or vertex of a triangle will not be equidistant from all sides of a triangle.
