Question 3
The points $(0,1)$ and $(1,2)$ are adjacent vertices of a square. Find the sum of the $y$-coordinates of all possible vertices diagonally opposite $(0,1)$.
Source discrepancy: the supplied answer includes a square in which the given vertices are opposite, contrary to the word “adjacent”. Answer this question with the printed adjacency condition.
Source discrepancy: the supplied answer includes a square in which the given vertices are opposite, contrary to the word “adjacent”. Answer this question with the printed adjacency condition.