What kind of volcanoes form from subduction boundaries

Composite volcanoes, stratovolcanoes, form from subduction boundaries.

In subduction zones, an oceanic plate subducts beneath a continental plate. A volcanic arc which is a series of volcanoes can form above the subduction zones where magma forms and rises from the friction of the plates rubbing against each other.

Composite volcanoes and stratovolcanoes form from subduction boundaries