<p>I am pretty sure I have seen blue book questions (maybe just one or two) where you had to realize that a vertex of an equilateral triangle cuts out 1/6th of a circle.</p>
<p>But anyway, who cares? What do you gain by labeling it “aberrant”? There is still no better way to prepare than to work steadily through released tests. (And yes, more recent would be better.) You KNOW what you have to do. Go do it.</p>