Square Dissection Diagram - Geometric Proof and Construction #2003618 (License: Personal Use)

This black-and-white geometric diagram illustrates a square dissected into eight congruent right triangles and two inner quadrilaterals, with intersection points marked 'c' to denote symmetry or congruence conditions. The construction is often used in Euclidean geometry to demonstrate area equivalence, Pythagorean theorem variants, or tessellation principles. Its clean, minimalist style emphasizes structural relationships over decoration.

Commonly used in mathematics textbooks, online geometry tutorials, and educational resources for teaching dissection proofs, spatial reasoning, or algebraic geometry; targets students, teachers, and self-learners seeking visual aids for geometric theorems.