Question

Which solid has an infinite number of planes of symmetry?

Answer 1

Answer:

A solid hollow cylinder has an "infinite number of planes of symmetry".

Explanation:

• Two or more faces are said to be symmetric when they have the same dimensions and are geometrically identical.

• When these faces are placed in a setting with 'X', 'Y' and 'Z' axes "perpendicular to each other", they make a plane with three lines of symmetry. A circle has "infinite lines of symmetry".

• Thus, a cylinder with two openings has an "infinite number" of "planes of symmetry".