Write a Matlab script to create a movie with these stipulations: • The base shape is the polygon whose vertices are the points (0, 0), (1, −1), (0, 2) and (−1, −1).

• The size of the shape gets bigger and smaller as t increases. The "size" of the shape becomes 0 every cycle, but is never negative.

• Note that at the start there is a right angle at the origin. As t increases, this point traces out a counter-clockwise closed curve.

• The shape as a whole spins in a clockwise orientation.