Those figures are called triangular prisms.
The triangular prism has the two triangular bases and rectangular side faces.
A rectangular pyramid has 5 faces: a rectangular base, and 4 triangular faces.
There are 3 rectangular faces and 2 triangular faces. The triangles are the bases.
Triangular prism.
A triangular prism.
a triangular prism!
It is a triangular prism
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Triangular Prism
a prism
A triangular prism (Two triangles as the two bases)
Short answer, yes. Long answer, a triangular prism has two triangular faces, its bases, and three rectangular faces, its sides, which connect the two faces. Unfolding the prism into a net reveals a rectangle divided into three rectangular sections (these are the three rectangular faces) and two congruent triangles attached along a common edge to one of these rectangles (these are the two triangular faces).