AutoCAD 

A r= 50, 100X100
pqo 100X100?

е

@dx,dy[Enter]
3:4:5 --> 60:80:100

@r<theta[Enter]
1:sqrt(3):2 --> @100<60

I
end, mid, int, cen, qua, 
tan, per, nea, . . .

F1: help
OSNAP

3D x $
XAA_VAj

QG骺n 
7.663*(a^3)



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