Concept:The perpendicular bisectors of the sides of a triangle meet at the circumcentre. This point is equidistant from all three vertices.Explanation:When the perpendicular bisectors of the sides are drawn, their point of intersection is the centre of the circumcircle. This circle passes through all three vertices of the triangle.For an acute-angled triangle, all angles are less than 90∘.In such a triangle, the circumcentre always lies inside the triangle.Therefore, the perpendicular bisectors intersect inside the triangle.Answer:inside the triangle