Circumscribe A Circle On A Triangle Construction - Math Is Fun

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Circumscribe a Circle on a Triangle

How to Circumscribe a Circle on a Triangle using just a compass and a straightedge

Circumscribe: To draw on the outside of, just touching the corner points but never crossing.

images/construct.js?mode=trianglecircum

Steps:

Construct the perpendicular bisector of one side of triangle
Construct the perpendicular bisector of another side
Where they cross is the center of the Circumscribed circle
Place compass on the center point, adjust its length to reach any corner of the triangle, and draw your Circumscribed circle!

Note: this is the same method as Construct a Circle Touching 3 Points