calculating angles of polysurface

hello @ll,

i have a input geometry that consist of several planar faces which are ngons.

i basically want to find out all the angles between adjacent faces to make some joinery that connects the face that share the same edge. (all at the inside )

so now is it better to set this up with a brep or build it up on vertices ?

for surfaces theres this brep topology component which shos which faces /edges correspond to each other - is there something similar for meshes (native gh component) ?

plz help out,

thank you