Question

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Answer 1

(Ans1)

Prisms and pyramids are three-dimensional solid shapes that contain sides and faces that are polygons -- two-dimensional shapes with straight sides. Both shapes fall under the large category -- polyhedrons -- because the sides and bases are polygons. Neither prisms nor pyramids have rounded sides, rounded edges or rounded angles, distinguishing them from cylinders and spheres. All of the side faces meet at the bases -- or at the base in the case of pyramids. Prisms and pyramids come in a variety of sizes, ranging from hand-held objects to grand architectural buildings.