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### 13 Cards in this Set

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• Back
 triangle inequality theorem the sum of the lengths of any 2 sides of a triangle must be greater than the 3rd side altitude a segment from a vertex to a poin on the opposite side forming a right angle orthocenter where all 3 altitudes meet, altitudes creat 3 sets of similar triangles angle side relationships the wider the angle, the longer the opposite side hinge theorem if 2 sides of a tringle are congrient to 2 sides of another triangle and the inclused angle of the 1st is larger than the included angle of the 2nd, then the 3rd side of the 1st is longer than the 3rd side of the 2nd incenter where all the angle bisectors meet midsegment theorem the segment connecting the midpoints of 2 sides of a triangle is parallel to the 3rd side and 1/2 its length median segment with 1 endpoint at a vertex and the other enpoint on the midpoint of the opposite side midsegment a segment which connects the midepoints of 2 sides of a triangle angle bisector theorem if a point is on the bisector of an angle, then it is equidistant from the 2 sides of the angle centriod where all the medians meet, center of gravity for a triangle circumcenter where all of the perpindularr meet, the circumcenter is equidistant from every corner perpindicular bisector theorem if a point is on the perpindicular bisector of a segment, then it is equidistant from the endpoints of the segment