Mathematics for IGCSE & O level - Symmetry (Section 1 - No. 46)
A cone has which of the following symmetry properties?
One line of symmetry.
No lines of symmetry.
Rotational symmetry of order 1.
Rotational symmetry of order 2.
Explication
A cone has one line of symmetry and rotational symmetry of order 1 (meaning it fits onto itself only once in one full rotation.)