Okay, so there still seems to be some confusion about Tau versus Pi. Tau is the full circle constant, and represents 360 degrees, so one rotation around a circle. Pi is the half circle constant, and represents 180 degrees, one half of a rotation around a circle. So writing your angle as 3*Pi is about the same as saying ''I walked three half-miles'' rather than ''I walked 1.5 miles.'' Everyone I know does not describe distances in half miles, but still most mathematicians I