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- The circumcentre is where the Perpendicular bisectors on the sides of a triangle meet. Typically denoted as \(S\).
- The circle that passes all three vertices of the circumcenter \((S)\) triangle as the center is called the circumcircle.
- The line segment from any triangle vertex to the Circumcentre of a given triangle is called the circumcircle of the circumradius.
- The orthocenter is the central focus of the triangle's altitudes. Normally it's denoted by \(H\).