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# Geometry Ch5

TermDefinition
Midsegment of a triangle A segment that connects the midpoints of the legs of a trapezoid.
Coordinate proof A type of proof that involves placing geometric figures in a coordinate plane.
Perpendicular bisector A segment, ray, line, or plane that is perpendicular to a segment at its midpoint.
Equidistant The same distance from one figure as from another figure.
Concurrent Three or more lines, rays, or segment that intersect in the same point.
Point of concurrency The point of intersection of concurrent lines, rays, or segment.
Circumcenter The point of concurrency of the three perpendicular bisectors.
Incenter The point of concurrency of the three angle bisectors.
Median of triangle A segment from one vertex of the triangle to the midpoint of the opposite
Orthocenter The point at which the lines containing the three altitudes of the triangle intersect.
Indirect Proof A proof in which you prove that a statement is true by tirst assuming that its opposite is true. If this assumption leads to an impossibility, then you have proved that the original statement is true.
Centroid The point of concurrency of the three medians of the triangle
Altitude of a triangle The perpendicular segment from one vertex of the triangle to the opposite side or to the line that contains the opposite side.
Created by: Dludden03