pitch circle to the bottom of a tooth
pitch circle to the top of a tooth
top of a tooth to the bottom of a tooth
addendum circle to the clearance circle
parallel to each other
perpendicular to each other
inclined at 45 Degree
opposite to each other
simple train of wheels
compound train of wheels
reverted gear train
epicyclic gear train
Right
Wrong
sliding pair
rolling pair
lower pair
higher pair
