If the sun rises in the northeast, where does it set?

All of the following were pre-columbian civilizations in latin america, except

The solstices and equinoxes, and the number of hours of daylight associated with each, are major factors in the seasons. use the drop-down menus to identify the month when each of these events occurs. the winter solstice in the northern hemisphere: an equinox in both hemispheres: the summer solstice in the northern hemisphere:

Given: circle a externally tangent to circle b. how many possible common tangents to circles a and b can exist? 2 3 4