Mysterious light in sky with 90 degree corners

I watched the white light for over half an hour.  It first travelled in a square pattern above my home, then changed to a rectangular pattern going more east bound.  At first I thought it was a plane but at each corner of both patterns it did 90 degree corners.  This was done at high speeds.  It was very high as evidenced by a plane passing in between my home and the white light.  I called the local news tv media but was discounted by whomever I talked with.  I tried taking a picture with cell phone but it didn’t show up.