antipedal
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antipedal — /an ti peed l/, adj. (in a mollusk) located opposite the foot. [ANTI + PEDAL] * * * … Universalium
antipedal — an·ti·pe·dal … English syllables
Pedal triangle — In geometry, a pedal triangle is obtained by projecting a point onto the sides of a triangle.More specifically, consider a triangle ABC , and a point P that is not one of the vertices A, B, C . Drop perpendiculars from P to the three sides of the … Wikipedia
Fermat point — In geometry, the first Fermat point, or simply the Fermat point, also called Torricelli point, is the solution to the problem of finding a point F inside a triangle ABC such that the total distance from the three vertices to point F is the… … Wikipedia