Rar — Fgronov

You can make a standard envelope using a square piece of paper by following these steps from wikiHow :

Could you clarify if you meant (the mathematician), a specific RAR archive file , or something else entirely? Fgronov rar

However, if you are asking how to (a common topic for "making a paper covering"), you can follow these simple origami steps to create one without needing glue or tape. How to Fold a Simple Paper Envelope You can make a standard envelope using a

: Position the paper like a diamond and fold it in half, corner to corner, then unfold it to leave a crease. : Fold the left and right corners into

: Fold the left and right corners into the center crease so they meet in the middle.

: You can use old book pages to make "teeny tiny" envelopes by following guides from creative crafters .

: If you need a more professional look, use glue and scissors to follow step-by-step official envelope tutorials .