Claudia sent this happily stamped (blue and white trimmed) envelope from Argentina!!!
And inside was a fun SURPRISE! Carefully i opened it up
Decorated with her stampings, I understood that I had to fold over tabs
and glue and assemble this odd shaped piece.
And the result is a hexagonal pyramid...εξάγωνα πυραμίδα (Greek, of course!):
In geometry, a hexagonal pyramid is a pyramid with a hexagonal base upon
which are erected six triangular faces that meet at a point (the apex).
It is also called a heptahedron (having seven = επτά = epta surfaces).
The word polyhedron comes from the Greek πολύεδρον,
as poly- (stem of πολύς, "many") + -hedron (form of έδρα, "base" or "seat").
Thank you, Claudia!!! Fun to see and make! xxx