Right Triangle Diagram with Side Labels a, b, c - Geometry Reference #1794364 (License: Personal Use)

This black-and-white line drawing depicts a right triangle ABC, where angle C is the right angle. Side a is opposite vertex A (vertical leg), side b is adjacent to angle A (horizontal leg), and side c is the hypotenuse connecting vertices A and B. The labeling follows standard mathematical convention for trigonometric ratios and the Pythagorean theorem (a² + b² = c²).

Commonly used in educational web pages, math tutorials, and STEM resources to explain basic triangle properties, trigonometric functions (sine, cosine, tangent), and geometric proofs. Matches user intent for visual aid in learning or teaching introductory geometry.