Geometric Folding Process: Square to Cone Transformation Diagram #1257517 (License: Personal Use)

This six-panel diagram traces the mathematical construction from a flat square (ABCD) through diagonal bisection, strategic cuts at points E and F, and progressive folding to form a three-dimensional cone. Each stage is carefully labeled with vertices (A-F) and shaded to indicate overlapping layers, reflecting early pedagogical techniques used in geometry instruction. The final panel reveals the resulting conical surface with its apex at F and base edge BC.

Used in educational resources on classical geometry, historical mathematics teaching, or STEM history articles; serves users seeking visual proofs of surface development, spatial reasoning, or vintage instructional diagrams.