geometry chapter 5 vocabulary

altitude

a segment from a vertex to the line containing the opposite side and perpendicular to the line containing that side

centroid

the point of concurrency for the median of a triangle

circumcenter

the point of concurrency of the perpendicular bisectors of a triangle

concurrent lines

three or more lines and their point of intersection

incenter

the point of concurrency of the angle bisectors of a triangle

median

a line segment with endpoints that are a vertex of a triangle and the midpoint of the side opposite the vertex

orthocenter

the point of concurrency of the altitudes of a triangle

perpendicular bisector

a line, segment, or ray that passes through the midpoint of a side and its perpendicular to that side

point of concurrency

the point of intersection of concurrent lines