Observe the globe and talk about the characteristics of latitude. Think about how many weft threads you can have.

1 All parallels are circles.

The latitudes with the same latitude have the same length, but the latitudes with different latitudes have different lengths-decreasing from the equator to the north and south poles. The equator is the longest and the poles are the poles.

All latitudes are parallel to each other, indicating the east-west direction.

The equator divides the earth into two parts-the northern hemisphere and the southern hemisphere.

Latitude and longitude intersect vertically.

There can be countless weft threads.