These icons are in the indicated source path.
For all icons in the source tree, see Artwork.
src/Mod/Part/
src/Mod/Part/Gui/Resources/icons/
src/Mod/Part/Gui/Resources/icons/booleans
src/Mod/Part/Gui/Resources/icons/create
src/Mod/Part/Gui/Resources/icons/parametric
src/Mod/Part/Gui/Resources/icons/tools
This page is retrieved from https://wiki.freecad.org/Artwork_Part