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Mathematics 9 Online
OpenStudy (sarahc):

HELP! Am I correct? ...Circumcenter=Center of outside circle. Angle Bisector=Divides an angle in half. Perpendicular Bisector=Divides the triangle in half. Incenter=Center of inside circle.

Directrix (directrix):

The circumcenter of a triangle is the point of concurrency (common intersection) of the three perpencicular-bisectors of the sides of the triangle. Check out the online math terms dictionary at http://www.mathwords.com/a_to_z.htm for the others.

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