HMMT 2004 G2

A parallelogram has 3 of its vertices at $(1,2),(3,8)$ , and $(4,1)$ . Compute the sum of the possible $x$ -coordinates for the 4th vertex.

Dataset text NuminaMath olympiads. Quoted with source.

Show the answer

Solutions

No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.