A small fir tree pattern block design

"a small simple Christmas tree or fir tree" Click directly on the image to enlarge it.

Questions/Activities for this holiday figurative design:

1. Count 17 triangles present in this simple Christmas tree.
2. Make your own version of this Christmas design by adding an extra row of nine green tiles.
3. How many six-sided shapes are formed inside this little tree?
4. Can you remove seven triangles from this tree but still make the design look like a tree of the same size?