In each subsequent figure the curved lines on the upper and lower side horizontal lines reverse in sequence one and three in clockwise direction from upper left
respectively.

In each subsequent figure the outside half circle forms inside after reversing and shifting one side anticlockwise and then it forms outside after reversing on the same side.
So these sequences continue respectively. The second design square forms once on next side anticlockwise after reversing from outside to inside.

In each subsequent figure increase in the number of triangles from upper left
corner beome on the basis of increasing of lines three, four, five, six and seven lines
respectively.

In each subsequent figure the circles form on the place of two-two stars from upper left corner. These small circles form on the place of existing stars in the next two
lines after forming upto lower left as 4, 5, 6, 7 and 8 respectively and then two-two stars form on the place of circles from back side.

In each subsequent figure the ‘square’ forms one side clockwise first and then half side anticlockwise respectively. Similarly, the ‘circle’ shifts half side, one side, one
and half side, two side and two and half side anticlockwise respectively in each subsequent figure also.