9514 1404 393
Explanation:
The center of a circle is at the intersection of the perpendicular bisectors of any pair of chords. Choose any pair of points and draw their perpendicular bisector. Repeat with a different pair. The intersection of those bisectors is the center of the circle. The radius of the circle is the distance from that center to any of the points.
Knowing the center and radius, you can draw the desired circle through all three points.
