Polygon partitioning is a way of splitting up a big shape (called a "polygon") into smaller shapes. Think of it like a puzzle: if you have a big, square puzzle piece, you can break it into lots of smaller pieces to make a bigger picture. It's a bit like that - the big shape (the puzzle piece) is called a "polygon," and when you break it into smaller pieces, that's called "partitioning." Partitioning a polygon takes some special math called geometry, so it's sort of like using a calculator to make sure the shapes fit together correctly.