Mathematics for IGCSE & O level - Symmetry (Section 1 - No. 25)
Which of the following describes the symmetry of a cone?
No lines of symmetry, and rotational symmetry of order 1
One line of symmetry, and no rotational symmetry
One line of symmetry and rotational symmetry of order 1
No lines of symmetry, and rotational symmetry of order 2
Explication
A cone has one line of symmetry and rotational symmetry of order 1.