You use the term ‘Kitty-Corner’ to indicate that something is positioned diagonally.
Example of use: “Our house is kitty-corner from the park.”
Interesting fact about Kitty-Corner
The term ‘kitty-corner’ has nothing to do with cats. Instead, it stems from the expression ‘cater-corner,’ which is derived from “quatre,” the French word for “four.” The term was used to describe the way the dots are placed on a dice positioned at number four, diagonally from one another.
