The maximum decrease of the equator to the two poles, what is the angular velocity? Is it equal in all parts of the earth? Or what?

The maximum decrease of the equator to the two poles, what is the angular velocity? Is it equal in all parts of the earth? Or what?

The angular velocity is 0 at both north and south poles
All the rest are equal
for instance:
You draw a concentric circle and make two lines passing through the center of the circle
So the angular velocity of the earth's rotation is the same everywhere