Question

The length of a parallel increases as we move away from the poles towards the equator

Answer 1

Earth is just about a circle or round fit in shape so the greatest circumference is at the equator on the grounds that the diameter is the longest straight line on the circle and width increments as we move from Poles to the equator, so flat parallel lines end up noticeably bigger.

In any case, as we move far from the equator the circumference continues to diminish. That is the reason, the length of parallel increases as we move far from poles towards the equator.

Answer 2

This is because the earth is spherical in shape