Question

Where does the centre of circumcircle of an obtuse triangle lie?

• A. Inside the triangle
• B. Outside the triangle
• C. On the side of triangle
• D. Can't say.

Answer 1

The correct option is B

Outside the triangle

We take $\Delta$ABC and draw the perpendicular bisector of any of two sides.

XY and MN are respectively the perpendicular bisector of sides AB and BC. They meet at a point O.

We can see that the point of intersection is outside the triangle.