The ideal line is a concept. A line that is drawn cannot be a mathematically true line since it will have a thickness - no matter how small. Also, it cannot be infinitely long - no matter how large.
fales
False
True
TRUE
false
Not sure, but I think it's true
True.
false
What do you mean prove that they are true? There's no true or false - they are simply there in the sky, imaginary figures.
False
false
true
True.
False.
Yes, the pitch circle is an imaginary circle on the gear that passes through the gear teeth and the addendums.
True
false