Mathematics for IGCSE & O level - Symmetry (Section 1 - No. 36)
Which shapes have the same number of lines of symmetry as their order of rotational symmetry? (select all that apply)
Circle
Regular polygon
Rhombus
Square
解释
Regular polygons have equal number of lines of symmetry and order of rotational symmetry, a square is a regular polygon, whereas a circle has infinite and a rhombus has an unequal number of lines of symmetry to its rotational symmetry.