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typeracer

Pit Stop
Racer yeechi (yeechi)
Race Number 42
Date Sun, 5 Mar 2017 15:58:43
Speed 63 WPM Try to beat?
Accuracy 90.4%
Rank 3rd place (out of 5)
Opponents domhellyeah (2nd place) exploiter911 (5th place) shayan98 (1st place)

Text typed:

In two dimensions we say that a rigid body has only one rotational degree of freedom, whereas in three dimensions we say that a rigid body has three rotational degrees of freedom. This might lead you to infer that in three dimensions you need to have three scalar quantities to represent a body's rotation. Indeed, this is the minimum requirement.
— (book) by David M Bourg (see stats)