A cube or a rectangular prism.
A cube has 4 flat surfaces (called faces) and 6 vertices (or corners).
rectangular prism
A triangular based pyramid would fit the given description.
5 Flat surfaces 4 flat surfaces (3 for the sides and 1 for the base).
Triangular prisim
What figure has 6 flat surfaces that all look exactly the same
square
The question is somewhat confused. It has "... 6 flat SQUARE faces 2 are SQUARE and 4 are RECTANGLES ...." Assuming the first part is wrong, the shape is a cuboid.
rectangle
A square or quadrilateral.
There are 4 corners in a flat rectangle and 8 corners in a 3d rectangle(rectangular prism).Four.
A triagular based pyramid has 4 corners, 6 edges and 4 faces