: Fold the top point of that triangle down to meet the bottom corner of the same side, making the paper look like a house with a pointed roof.
: Fold the entire "house" shape in half vertically so it looks like a narrow strip or a paper airplane wing. Forward (Unique (CRO) Remix)
: For a more permanent decoration, you can use 20x20 cm paper to fold a standing origami cross without using any cuts. : Fold the top point of that triangle
: Take a rectangular piece of paper (like A4). Fold the top corner down diagonally to align with the opposite edge, forming a large triangle with a rectangular strip left at the bottom. Forward (Unique (CRO) Remix)