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Omni-MATH / A dot is marked at each vertex of a triangle ABC. Then, 2,3 , and 7 more dots are marked on the sides AB,BC, and CA, respectively. How many triangles have their vertices at these d…

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problem

A dot is marked at each vertex of a triangle ABCA B C. Then, 2,3 , and 7 more dots are marked on the sides AB,BCA B, B C, and CAC A, respectively. How many triangles have their vertices at these dots?
Plain-text mathematical notation (without MathML)
A dot is marked at each vertex of a triangle ABC. Then, 2,3 , and 7 more dots are marked on the sides AB,BC, and CA, respectively. How many triangles have their vertices at these dots?
Original LaTeX notation
A dot is marked at each vertex of a triangle $A B C$. Then, 2,3 , and 7 more dots are marked on the sides $A B, B C$, and $C A$, respectively. How many triangles have their vertices at these dots?

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