what figure has 3 lateral faces that are rectangales
http://ceemrr.com/Geometry2/Classifications3D/Classifications3D_print.html
http://www.mathsisfun.com/geometry/prisms.html
A figure that has three lateral faces that are rectangles is called a rectangular prism. A rectangular prism is a three-dimensional shape that has six faces. Out of these six faces, three faces are rectangles, and they are the lateral faces of the prism. The other three faces are also rectangles, but they are the top and bottom faces of the prism.
To visualize a rectangular prism, you can take a box-shaped object, like a cereal box or a shoebox. Look at the sides of the box, and you will see that they are rectangles. These rectangles are the lateral faces of the prism.
So, if you come across a figure with three lateral faces that are rectangles, you can identify it as a rectangular prism.