<prompt> The apex of the Bonwills Triangle is located at the:Anterior tip of the incisive papillaUpper central incisors contact pointAnterior most point on the chinLower central incisors contact point  <response>: Bonwill triangle - An equilateral triangle formed by lines from the contact points of the lower central incisors, or the medial line of the residual ridge of the mandible, to the condyle on either side and from one condyle to the other. 