A shape is drawn on a centimetre grid. Write down the order of rotational symmetry of the shape.

Answer

The image shows a T-shaped figure. Rotational symmetry refers to the number of times a shape can be rotated by an angle between 0 and 360 degrees and look the same as its original position. For a T-shaped figure, if you rotate it by 90 degrees, it will stop looking like a T-shape. If you rotate it by 180 degrees, it will be upside down and still not look like the original T-shape. If you rotate it by 270 degrees, it will again not look like the original T-shape. Only a full rotation of 360 degrees will bring it back to its original appearance. Therefore, its order of rotational symmetry is 1. The order of rotational symmetry is 1 because the shape only looks identical to its original position after a full 360-degree rotation. It does not have rotational symmetry for any angle less than 360 degrees.