According to the dictionary, a corner is “a point where two converging lines meet, forming an angle, either external or internal”.
Which preposition goes with corner: in, on or at? The answer is the three o them can precede this word. However, the three expressions have different meanings:


Here’s a tip that can help you remember this: in is used with the idea of being inside a volume; on when there is an idea of surface, and at when we just mean a point or being near something.