How to Fold a Paper Pyramid - Step-by-Step Origami Guide #1852087 (License: Personal Use)

This schematic illustrates a critical folding step in constructing a tetrahedral paper pyramid, where a triangular flap is folded upward along a pre-creased dashed line. The solid and dotted lines indicate visible and hidden edges respectively, while the bold arrow guides the user on the correct motion. The diagram emphasizes spatial reasoning and precise creasing essential for successful origami assembly.

Used in DIY craft tutorials, educational geometry lessons, or origami instruction pages; targets users seeking visual guidance for paper folding projects, especially students or hobbyists learning 3D shape construction.