|1||Start with triangle ΔABC.|
|2||Draw a perpendicular bisector of one of the sides. In this case, the perpendicular bisector of AB is drawn.|
|3||Draw a perpendicular bisector of another side. In this case, the perpendicular bisector of BC is drawn.|
|4||Label the intersection of the perpendicular bisectors as point D.|
|5||Draw a circle with center D and radius DA.|
Use the GeoGebra application below to construct the circumscribing circle about the triangle.
To change the manipulative, first click on the arrow menu button. Then click on the blue points and drag them to change the figure.
|Table 1: Circumscribing a circle about a triangle.|
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