If circumcentre of a traingle is outside the traingle, then what is the type of traingle?

Explanation

We have vertex A(0,0) circumcentre O(3,4) and centroid G(6,8). Point O lies on the perpendicular bisector (OD) of side BC and point G lies on the median AD.
Now, A O and G are collinear. So median AD and perpendicular bisector (OD) of BC coincide. Thus, AD is the perpendicular bisector of BC. Therefore, triangle ABC is isosceles.