I play tetris too (hkgwife)

Race #17243

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Official speed 127.65 wpm (32.62 seconds elapsed during race)
Race Start January 20, 2019 2:07:25pm UTC
Race Finish January 20, 2019 2:07:57pm UTC
Outcome Win (1 of 4)
Accuracy 99.0%
Points 127.65
Text #3622275 (Length: 347 characters)

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.