Mathematics for IGCSE & O level - Symmetry (Section 1 - No. 50)
Which of the following describes the symmetry of a regular pentagon?
5 lines of symmetry and rotational symmetry of order 5
5 lines of symmetry and rotational symmetry of order 1
1 line of symmetry and rotational symmetry of order 5
No lines of symmetry and rotational symmetry of order 5
Giải thích
A regular pentagon has 5 lines of symmetry and rotational symmetry of order 5.