Build coordinate geometry fluency with a downloadable set of 30 definition cards focused on Coordinate Systems. Each card pairs a clear definition with a labeled diagram to reinforce concepts such as ordered pairs, the x- and y-axes, the origin, quadrants, reflections, slope, distance, and midpoint. Use for classroom display, guided instruction, or independent review. Designed for Grades 5–10 and aligned to Common Core standards for graphing, distance, and relationships on the coordinate plane.