All of the names

Back in Fifth Grade, the Math teacher taught us basic geometry.
She handed out a test with shapes on it.
“Name each shape,” she said.
When I saw a square, I called it a square.
When I saw a hexagon, I called it a hexagon.
And so on.
When I got my test back, I saw a big red F on it.
“All of the names” the teacher wrote in red.
The square was also a polygon, a quadrilateral, a rectangle, and a rhombus.
I called her all the names I thought she was, and landed in the principal’s office.