Answer:
Two ( 2 ) more planes of symmetry
Explanation:
A Pentagonal prism is made up 6 symmetry planes while a triangular prism has 4 symmetry planes .
based on this compositions of both a regular pentagonal prism and a regular triangular prism the difference in planes of symmetry will be 2
which is = 6 planes of symmetry minus 4 planes of symmetry
= 6 - 4 = 2 planes of symmetry.
A prism is a geometric figure whose two sides appear similar, equal and are parallel rectilinear figures and its sides are considered as parallelograms. this geometric figure is usually solid in nature.