Building the half cylinder was a quite challenge for me. It involves with making a circle, use pencil tool to draw a line to divide the circle, select parts to erase and push the half circle up. That does not sound complicate at all. However, I did not make it the same exact measurement in the SketchUp program during the steps of making it. I was just starting to use the program. It seem difficult to do because I was not familiar with the command of measurement tool. Finally I was able to make it with instruction of Professor.
