Choose the figure which is different from the rest.

   (1)     (2)     (3)     (4)     (5)

All other figures can be rotated into each other.

Only in fig. (4), the black triangle and the black circle lie at the two ends of the same diameter.

One circle is replaced by a new symbol in each step and this replacement takes place on either ends alternately. The complete figure rotates 45 ^oACW in each step.

In one step, one half-leaf is lost from the CW-end and three half-leaves are added at the ACW-end. In the next step, one half-leaf is lost from the CW-end and two half-leaves are added at the ACW-end.

In the first step, the elements at the four ends move in the sequence . In each subsequent step, the elements move in the sequence obtained by rotating the previous sequence through 90 ^oACW. Also, in each step, the element that reaches the encircled position gets replaced by a new element.

All other figures can be rotated into each other.

Each one of the remaining figures is composed of straight lines only.

In each of the other figures, the lower element is the vertically inverted image of the upper element.

Only in fig. (3), the marked angles are unequal.

Only fig. (4) contains two circles while all other figures have only one circle.