Draw a tetromino which passes symmetry _____.

Complete the given sequence.

Complete the given sequence.

Find the number of all possible squares that can be formed from the Figure.

Complete the rectangle given below using the five tetrominoes only once.

Complete the rectangle given below using the five tetrominoes only once.

In Fig 6.16 one $4\times 4$ square is filled by a tetromino shape . 
In the same way try to fill the other $4\times 4$ square grids (Fig.6.17 to Fig.6.20) using the other four tetrominoes  ( and ). 

 Find which tetromino shape cannot fill the $4\times 4$ square grid completely.

  Fig 6.16                 Fig 6.17             Fig 6.18              Flg 6.19                Fig 6.20

A tetromino is a shape obtained by _____ squares together.