  Interplanetary (IP) shocks are disturbances commonly observed in the solar
wind. IP shock impacts can cause a myriad of space weather effects in the
Earth's magnetopause, inner magnetosphere, ionosphere, thermosphere, and ground
magnetic field. The shock impact angle, measured as the angle the shock normal
vector performs with the Sun-Earth line, has been shown to be a very important
parameter that controls shock geoeffectivess. An extensive review provided by
Oliveira and Samsonov (2018) summarized all the work known at the time with
respect to shock impact angles and geomagnetic activity; however, this topic
has had some progress since Oliveira and Samsonov (2018) and the main goal of
this mini review is to summarize all achievements to date in the topic to the
knowledge of the author. Finally, this mini review also brings a few
suggestions and ideas for future research in the area of IP shock impact angle
geoeffectiveness.
