Strictly speaking, any 3d figure with anything besides 6 sides cannot consist of rectangles. However, the name for an 8-sided figure is "octahedron".
A rectangular prism.
A rectangular prism.
Hexagonal prism, if you don't count the bases as faces. Rectangular prism, if you do.
OCTOHEDRON
Triangular prisim. The three faces are rectangles, while the two bases are triangles.
Hexahedron
A cuboid.
A pentagonal prism
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A rectangular prism.
cuboid
A rectangular prism.
The correct answer is a cuboid or rectangular prism.
A rectangular prism.
Hexagonal prism, if you don't count the bases as faces. Rectangular prism, if you do.
Probably a pentagonal prism.
pentagonal prism