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typeracer

Pit Stop
Racer Evelyn (awesomeev10)
Race Number 42
Date Wed, 10 May 2017 15:51:15
Speed 57 WPM Try to beat?
Accuracy 84%
Rank 2nd place (out of 4)
Opponents abliwhite (3rd 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)