Answer:
The common physical pattern formed by most of the mountain ranges and rivers of mainland Southeast Asia is that of their orientation and origin in the north.
Step-by-step explanation:
- It is a fact that most mountain ranges in Southeast Asia lie in the north and most rivers flowing in Southeast Asia originate in these mountains.
- The Himalayas in the northern part of Southeast Asia have been formed as a result of the convergence of two continental plates.
- These mountains are glaciated and are thus the source of most rivers in the region.