Tetrahedron Folding Diagram - Geometric Construction Guide #1852089 (License: Personal Use)

This black-and-white line drawing depicts a tetrahedron net in the process of being folded into a three-dimensional shape. The dashed line represents the crease or hinge, while the curved arrow shows the direction of rotation needed to form the solid. Ideal for teaching spatial reasoning and polyhedron construction in mathematics.

Used in educational resources, geometry textbooks, or interactive math websites to demonstrate how 2D nets transform into 3D solids; targets students, teachers, and self-learners seeking visual aids for polyhedral geometry.