Straight prism

A prism is called straight if its side edges are perpendicular to the bases.
A prism is called oblique if its side edges are not perpendicular to the bases.
The right prism faces - rectangles.



A prism is called correct if its bases are regular polygons.
The area of ​​the side surface of a prism is the sum of the areas of the side faces.
The total surface of the prism is equal to the sum of the side surface and the base areas