Question

what is river pattern and name any four pattern formed by river

Answer 1

River patterns are those patters formed by rivers in a particular drainage  basin.
The 4 patterns formed by rivers drainage  basin:
 Flowing pattern ,trellis ,rectangular and radial patterns.
#hope it help you#

Answer 2

Drainage systems are also known as river pattern.river pattern are patterns formed by the streams,rivers.the four river patterns are dendritic, trellis, radial and rectangular.