Mathematics for IGCSE & O level - Symmetry (Section 2 - No. 7)
Which shapes have rotational symmetry of order 2? (Select all that apply)
Parallelogram
Rectangle
Circle
Isosceles Triangle
Vysvětlení
Parallelograms, rectangles and circles have rotational symmetry of order 2. The isosceles triangle does not have rotational symmetry.