Classic Corner Shapes
This week's problem is rather simple, especially if you recognize a certain type of corner shape.
For problems, questions, or comments (even if they're about this web page or go in general), email the Problem of the Week editor
This week's problem is rather simple, especially if you recognize a certain type of corner shape.
For problems, questions, or comments (even if they're about this web page or go in general), email the Problem of the Week editor