Answer:
it's 2
Step-by-step explanation:
We know that a geometric figure has rotational symmetry if it maps onto itself under rotation about an angle at its center.
The order of rotational symmetry is the number of times the geometric figure maps onto itself during a rotation of 360°. [ At 180° and 360° it maps onto itself] A rhombus maps onto itself two times during a rotation of 360°
Hence, A rhombus has an order of rotational symmetry of 2.
