Question

fill in the blank question
wegener studied the shapes of continents to support his continental drift hypothesis. he observed that the coastline of south america fit together with the coastline of africa.
need help? review these concept resources.
read about the concept

Explanation:

Alfred Wegener noted that the east - coast of South America and the west - coast of Africa seemed to fit together like puzzle pieces, which was one of the key observations for his continental drift hypothesis.

Answer:

east; west