Question

Aaron is constructing a circle circumscribed about a triangle. He has partially completed the construction, as shown below. What should be his next step in the construction?

Answer 1

@KamiBug

Answer 2

http://www.mathsisfun.com/geometry/construct-trianglecircum.html

Answer 3

Make a line perpendicular to the one he drew, I think.

Answer 4

I took Geometry last year, but I don't remember much of it. :P