the object shown is made of glass. what is it called? convex lens pyramid prism concave lens

the object shown is made of glass. what is it called? convex lens pyramid prism concave lens
Answer
Brief Explanations:
A convex lens is curved outward, a concave lens is curved inward. A pyramid is a polyhedron with a polygonal base and triangular faces. A prism is a polyhedron with two congruent and parallel bases. The shown object with two parallel and congruent triangular - shaped faces and rectangular lateral faces is a prism.
Answer:
prism