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Plane Geometry is about flat shapes like lines, circles and triangles , shapes that can be drawn on a piece of paper

2 votes
2 answers
162 views

Maximum possible number of similar three-colored triangles

I want to maximize the number of similar triangles with vertices from three fixed sets, one vertex from each set. For example, if you fix two points $X$, $Y$ (i.e. two sets with only one member), then …