Cartesian Coordinate System with Quadrants and Angle Measurement Diagram #3699751 (License: Personal Use)

This black-and-white schematic displays a standard Cartesian coordinate system centered at origin O, divided into four numbered quadrants (I-IV). Rays OA, OB, OC, and OD extend from the origin into each quadrant, while concentric arcs with directional arrows indicate positive (counterclockwise) angle measurement-common in trigonometry. The axes are labeled X, X′, Y, and Y′, reinforcing bidirectional orientation.

Used in mathematics education, especially in high school or college-level trigonometry and precalculus courses, to teach angle positioning, quadrant signs, and polar/Cartesian relationships. Matches user intent for visual learning of coordinate geometry fundamentals.