I noticed that the site says that the enneagram starts with an isoceles triangle, when actually the embedded triangle is equilateral. I suppose "isoceles" just sounded more mysterious than "equilateral."

I wonder what personality type that make me.

As for the test, people are so complex and variable, that any description will probably describe them, especially if you put in a few sets of conflicting characteristics. For example, Peacemaker combined with Reformer. The description works whether you are reticent or vociferous on any given day.