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August 28, 2015

Homework Help: Math

Posted by Anonymous on Sunday, October 14, 2012 at 11:58am.

Triangle with vertices:
D(-18,12)
E(-6,-12)
F(12,6)

Show that the right bisectors of the sides of triangleDEF all intersect at point C(-4,4), the circumcentre of the triangle.

-I found the midpoint of DF then the slope of the midpoint and point E, then found y intercept of new point (midpoint I labelled A) I then subbed point C into the equation of the line found. But it doesn't seem to be equally each other as they should...help!

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