Visual Proof of (a - b)² Algebraic Identity | Geometry Diagram #29464 (License: Personal Use)

This hand-drawn diagram shows a large square of side length a, with a smaller square of side b removed from one corner, leaving an inner square of side (a - b). Dashed lines indicate diagonals and subdivisions that help derive the identity (a - b)² = a² - 2ab + b² through area decomposition. The labeling α and β denote segment lengths used in the proof.

Used in mathematics education resources, algebra textbooks, or online tutorials explaining geometric proofs of binomial expansions; targets students and educators seeking intuitive understanding of algebraic identities.