Construct perpendicular bisectors on each side of the triangle.[br][br]Watch this video from 0:55 to 1:08[br]https://youtu.be/bUbi5SmHyjg
Once you construct a perpendicular bisector on each side of the triangle, what do you observe?[br][br]Move the triangle around. Move the slider.[br]Does your observation still hold?[br]
They all intersect at the same point.