Mathematics for IGCSE & O level - Symmetry (Section 1 - No. 45)
Which of the following is true about the symmetry of a square-based pyramid?
No lines of symmetry, rotational symmetry of order 4
Four planes of symmetry and rotational symmetry of order 4
Four lines of symmetry, no rotational symmetry
One line of symmetry, rotational symmetry of order 1
Explication
A square-based pyramid has four planes of symmetry and rotational symmetry of order 4.