A the (first, or internal) Kenmotu point, also called the congruent squares point, is the triangle center constructed by inscribing three equal squares such that each square touches two sides and all three squares touch at a single common point. The Kenmotu point is Kimberling center X_371 and has equivalent triangle center functions α_371 | = | cos(A - 1/4 π) α_371 | = | cos A + sin A. It was first found by J. Rigby.

Ehrmann congruent squares point | Kenmotu circle | sangaku problem | triangle packing