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Set the compass at point A and swing an arc.a.Using the same radius, swing an arc from point B so that the two arcs intersect.b.If they do not intersect, lengthen the radius for each arc.c.Connect the two intersections to locate the perpendicular bisector.d.

Construct the perpendicular bisector of segment AB .1.

Repeat the process for segments BC or AC2.Locate the point of concurrency. Label this point D.3.

Place the compass point at D and open the compass to the distance ofa.D to any vertex.b.Use this setting to construct a circle around c.

Construct the circumscribed circle with center D.4.

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