Question

A four-sided polygon has these properties of rotation and reflection:
When it rotates 360°, it maps onto itself at four different angles of rotation.
It can be reflected onto itself across four different lines of reflection.
Which kind of polygon must it be?

Answer 1

@perl can you help?

Answer 2

I strongly believe that it is a rhombus. Could you help me with my question?

Answer 3

its a square