**Coordinate**: A number that indicates the precise position of a point or other geometric element; when using a grid, the first coordinate indicates the position on the x axis (typically horizontal) and the second indicates the position on the y axis (typically vertical).

Resources for this term:

Finding Equations of Parallel and Perpendicular Lines

Students identify parallel and perpendicular lines and find points of intersection and x- and y-intercepts by looking at the equations of the lines.

Representing and Combining Transformations

Students reflect and rotate two-dimensional shapes, describe transformations, and explore the effects of combining transformations.