A prism mainly consists of:
- two bases
- flat surfaces
- equal (uniform) cross-section(s).
1. A cone can't be a prism, its sides can't curve.
2. A prism has two bases, but the pyramid only has one.
3. Is a prism, meets the requirements to be a prism. (Triangular Prism)
4. Is a prism, meets the requirements to be a prism. (Rectangular Prism)
5. A square does not meet any of the requirements to be a prism.
Note: A Square Prism (Cube) can be an answer, however, this square is flat.
Answers:
3) Triangular Prism.
4) Rectangular Prism.