EntityQ5131002· pop 5· linked from 10 articlescleaverSign in to savegeometric termConnectionsbisectionEntityArchimedesEntitygeometryEntitytriangleEntityInternational Standard Book NumberEntityperimeterEntityline segmentEntityJSTOREntityMathWorldEntityincircle and excircles of a triangleEntitymidpointEntityEric W. WeissteinEntityMathematical ReviewsEntityincenterEntityMathematical Association of AmericaEntityconcurrent linesEntitymedial triangleEntitySpieker centerEntityMathematics MagazineEntitySpieker circleEntityCategoriesLines defined for a triangle