Alex and Tangrams

The other day after Alex finished all of his school work he pulled out the bucket of tangrams and started playing around with them.   He decided that he was going to use only triangular pieces to make a few designs.  His first design was a large triangle of triangles.  

His second design was a castle tower rocket also made of triangles.  He was very proud of his work and asked if he could take a picture of each one. 



What can you make with tangrams?